TCG Market Tracker: How Cardlogs Tracks Card Prices Across TCGplayer, Cardmarket and eBay (2026 Guide)

Cardlogs tracks TCG card prices nightly from TCGplayer, Cardmarket and eBay sold listings across five games, with a blended price, graded data, box EV and portfolios.

Cardlogs is a cross-source TCG market tracker. Every night it prices cards from TCGplayer, Cardmarket and eBay sold listings (81,280 cards on TCGplayer, 44,488 on Cardmarket and 56,452 on eBay sold data as of September 24, 2026), blends them into one Aggregate price, and adds graded prices, population reports, booster box EV, a market cap index per game and portfolio tracking. It covers One Piece, Riftbound, Dragon Ball Super Fusion World, Pokémon and the Palworld TCG, on the web and in the iOS and Android apps.

This guide explains what a TCG price tracker has to do in 2026, why one marketplace's price routinely misleads, and how Cardlogs' named metrics (the Aggregate price, the Cardlogs Market Cap Index and Cardlogs Box EV) turn nightly data into numbers you can act on. It was first published in July and was rewritten on September 25, 2026 with current numbers, including two corrections to what the July edition said.

Why do single-source TCG prices mislead?

Because no single marketplace is "the" price. A card has at least three prices at once: what it sells for on TCGplayer in the US, what it trades at on Cardmarket in Europe, and what copies actually sold for on eBay. The three disagree often, in both directions, and a tracker that shows one of them shows a third of the market.

Two failure modes matter most.

Regional spreads, and they flip. In July this guide said the US paid 2.6 times the EU price for Vayne - Hunter (Signature) from Riftbound's Spiritforged set ($1,999 on TCGplayer against €760.62 on Cardmarket). As of September 24, 2026 the order has reversed:

Europe and eBay sold now agree within 3%, and TCGplayer is the low one, 36% under eBay. Part of that change is the market and part is ours, which is the second failure mode.

A thin market's price is a handful of sales. On September 13, 2026 Cardlogs changed how it computes the TCGplayer price of thinly traded cards, after one or two sales were setting the headline of chase cards for days. Signature cards were hit hardest: Vayne's TCGplayer price was $2,289.95 on August 20 and $1,272.06 on September 24, and much of that drop is the new rule, not the market. We removed that night from the market index (below) so it does not read as a crash. The lesson holds for any tracker: before trusting a price on an expensive card, look at how many sales stand behind it. Every Cardlogs card page shows the eBay past sales behind the sold price.

This is why Cardlogs treats every card as a three-column problem instead of picking a winner. The columns disagree constantly, and the disagreement is information.

What is the Cardlogs Aggregate price?

The Cardlogs Aggregate price is one blended USD price per card and per sealed product: each source's price weighted by that source's own sales evidence (how much it trades and how recently), with any source more than 3 times away from the others left out.

It is what a new Cardlogs account sees by default, and since September 17, 2026 it is also the price behind each game's Index tab and the home-page market heatmap. You can still switch the whole app to TCGplayer, Cardmarket or eBay in Settings. Two rules keep it honest:

• Sources count by their own evidence. TCGplayer and eBay weigh by their own recent sales, so a card with one sale in a month cannot let that sale dominate. Cardmarket publishes no sale counts, so it weighs by how many nights in the last 30 it printed a price, which means a Cardmarket price that has stopped moving still counts in full. We check that case by hand in anything we publish.
• Its moves are never computed from its own history. A blended price can step just because a new source joined it (a new eBay link, say) with no market moving. So Cardlogs computes the Aggregate's daily, weekly and monthly change as the weighted average of each source's own move, never by differencing the blended number.

The Vayne card above shows why a blend beats any single column: the Aggregate reads $1,716.33, between the low TCGplayer price and the two sources that agree.

How do you track TCG card prices properly?

Cross-check at least two markets, anchor on real sales, and watch changes rather than levels. The working version we apply to every card in the database:

1. Start from sales, not asks. A listing is what a seller hopes for. eBay sold data is the closest thing to ground truth, but open the sales behind it: one sale is not a price.
2. Compare US and Europe before any buy or sell. The Riftbound Radiance booster box pre-order is $244.03 on TCGplayer and €130.25 (about $148) on Cardmarket as of September 24, 2026, a 65% gap on the same sealed product. Cardlogs converts display prices across USD, EUR, GBP, AUD, CAD and JPY at daily ECB rates so the comparison is like for like.
3. Track changes, not just prices. A card at $500 tells you nothing; a card at $500 that was $380 thirty days ago does. Cardlogs computes 1-day, 7-day and 30-day changes per source on every card, and its movers views sort the catalog by them.
4. Value graded copies per grade. A PSA 10 and a raw copy of the same card are different assets. A tracker that prices your slabs at raw prices misvalues your collection, sometimes by multiples.
5. Judge sealed with EV. A booster box has a computable expected value at current singles prices. It turns "is this box worth opening?" into arithmetic.

Everything else on this page is these five habits, automated nightly.

What does Cardlogs track for One Piece Card Game?

One Piece is the most-traded game in Cardlogs by value. As of September 24, 2026 the nightly market cap computation counted 6,957 One Piece cards priced on TCGplayer, 12,183 on Cardmarket and 8,870 on eBay sold data. English and Japanese prints are separate rows with their own prices, and sealed products (boxes, cases, anniversary sets, pre-errata Romance Dawn) have their own pages.

According to Cardlogs market data, the One Piece market was flat on listings and down on sales in the 30 days to September 24, 2026: the Cardlogs Market Cap Index moved +0.6% on TCGplayer, -0.7% on Cardmarket (to September 22) and -5.1% on eBay sold prices. In July all three were rising (+6.0% to +11.6%). The current set is covered in the OP-17 price guide, the next two in the OP-18 and EB-05 set guides, and the month in the One Piece market watch.

What does Cardlogs track for Riftbound?

Riftbound, the League of Legends TCG by Riot Games, is the youngest large catalog in Cardlogs: 1,539 cards across Origins, Proving Grounds, Spiritforged, Unleashed, Vendetta and the promo and signature products, with 1,471 priced on TCGplayer, 1,392 on Cardmarket and 914 on eBay sold data as of September 24, 2026.

It was the fastest-rising game in July (+20.0% to +31.9% in 30 days). It has stopped: the index moved -4.4% on TCGplayer, +5.9% on Cardmarket and +3.2% on eBay sold in the 30 days to September 24, and almost half of the Cardmarket gain is one card (details under the index table below). Sealed Riftbound carries a wrinkle no price feed shows: Origins wave 1 and wave 2 share one UPC and one listing, so every Origins sealed price, ours included, blends both print runs (how to tell an Origins first print). Live tables: the most expensive Riftbound cards, Riftbound booster box EV and the Riftbound price guide.

What does Cardlogs track for Dragon Ball Super Card Game?

The Dragon Ball catalog covers Dragon Ball Super Card Game Fusion World and the classic DBS Masters sets in one corpus of 14,523 rows: 11,548 cards priced on TCGplayer, 9,084 on Cardmarket and 12,170 on eBay sold data as of September 24, 2026. Japanese Fusion World singles, which have little liquidity on TCGplayer or Cardmarket, are priced from Cardrush, a large Japanese card shop, in yen.

The market is quiet: +0.5% on TCGplayer, +3.3% on Cardmarket (to September 22) and +1.0% on eBay sold in 30 days. Deeper dives: the Fusion World price guide, the most expensive Fusion World cards and the FB11 set guide.

What does Cardlogs track for Pokémon?

Pokémon is the largest catalog in Cardlogs by far: 64,133 card rows on 406 set pages, from Base Set (1999) to 30th Celebration (September 16, 2026), in English and Japanese. As of September 24, 2026 the market cap computation counted 61,304 Pokémon cards priced on TCGplayer, 21,829 on Cardmarket and 34,266 on eBay sold data.

Since September 17, 2026 every printing that sells at its own price is its own card in Cardlogs. A Reverse Holofoil, a 1st Edition, a Poké Ball or Master Ball pattern: 16,561 of those printings now have their own row, price, graded prices and population, with a printing badge and a Printing filter, instead of being averaged into one card.

The 30-day index: +0.5% on TCGplayer, +3.9% on Cardmarket (to September 22) and +1.7% on eBay sold. The July edition of this guide called the catalog "vintage Pokémon"; with every modern set now tracked, that label was wrong.

What does Cardlogs track for Palworld TCG?

Palworld has been live on Cardlogs since August 12, 2026, thirteen days after the game's worldwide launch. Coverage is 265 English-print cards across the Dawn of Palpagos booster, the trial decks and the launch promos, priced from eBay sold listings via PriceCharting: 232 of them had a sold price on September 24, 2026.

The July-era version of this section said TCGplayer and Cardmarket had no Palworld product line. That was true then and is half true now: TCGplayer opened a Palworld line on September 7, 2026, which Cardlogs checks by hand but does not yet read nightly; Cardmarket still has no Palworld category. So every Palworld price on Cardlogs is sold-based, from one venue.

According to Cardlogs market data, the most expensive Palworld single is the English gold Soul ESOUL-002 at $2,400 sold-based as of September 24, 2026, on sales of $2,427, $2,400 and $3,290 between September 22 and 24. The Palworld index rose 12.1% in 30 days on eBay sold, but 232 cards is a thin base: 4.6 points of that came on September 24 alone. Deeper dives: where to track Palworld prices, the most expensive Palworld cards and the Palworld TCG launch guide.

The Cardlogs Market Cap Index, explained

The Cardlogs Market Cap Index is a chain-linked, same-card price index: each day's change is computed only on cards that have prices on both days, then linked into a running series seeded at 100 on May 28, 2026, so newly released cards expand the market cap but never count as price growth.

That second clause is the point. A plain "total market value" chart spikes every time a set releases, because thousands of new cards enter the sum. That is catalog growth, not price growth. The chain-linked index strips new entries out of the day-to-day comparison: if the same cards are worth more today than yesterday, it rises; if a set launch doubles the catalog overnight, it does not move.

Cardlogs computes the index per game and per source every night. The 30-day change as of September 2026:

What sits inside those numbers, stated so nobody has to find it:

• Cardmarket legs stop on September 22. Cardmarket re-published an unchanged price file for September 23, then the September 24 file moved Pokémon +4.7% and Riftbound -4.8% in a single night. We hold those legs at September 22 until the next nights show whether that move is real.
• Riftbound on Cardmarket: one signed Galio prize card, repriced from €9,000 to €11,500 on September 20, moved the whole leg +2.6% that night. Without it the 30-day figure is about +3.2%.
• The September 13 pricing-rule changes (the TCGplayer thin-market rule above, and a Cardmarket foil-price fix on Pokémon) were removed from the Riftbound TCGplayer and Pokémon Cardmarket indexes by treating that night as no move.
• Palworld is 232 cards; 4.6 of its 12.1 points came on September 24.

Read across a row and you see the sources disagree (One Piece: listings flat, eBay sold down 5%). Read down a column and you see which game is moving. In July it was Riftbound, by a wide margin on every source. In September no game is.

The raw market cap answers a different question. As of September 24, 2026, the summed price of one copy of every tracked card was $3.67 million on TCGplayer and $1.72 million on eBay sold data, and €1.61 million on Cardmarket as of September 22. The cap is a size snapshot, useful for comparing games and meaningless as a time series, because it jumps whenever coverage grows. The index is the movement metric. When a headline says a TCG market "grew 30%", ask which of the two was measured; see which TCG is growing fastest for the full comparison.

Cardlogs Box EV, explained

Cardlogs Box EV is the expected value of opening one booster box at current singles prices: the expected value of every card slot in a pack, weighted by pull rates, summed over the packs in a box, recomputed nightly on both TCGplayer and Cardmarket prices.

Box EV answers the question at the shelf: if I open this box, what is the average value of what comes out? As of September 24, 2026, the four most recent One Piece main sets with a settled EV (OP-13 to OP-16) return between 70% and 111% of box price at TCGplayer singles prices:

Older boxes read the other way: Awakening of the New Era (OP-05) sells at $1,060.99 against a $299.11 EV (28%). Nobody buys a sealed OP-05 box for its pulls; the premium is the sealed product itself.

Because EV is computed per source, regional differences show too: a white-bottom Romance Dawn box returns 67% of its price at TCGplayer singles prices but 97% at Cardmarket prices, as of September 24, 2026.

A correction. The July edition of this guide quoted The Best (PRB-01) at a Box EV of 185% of box price. Cardlogs corrected its Box EV model on July 30, 2026, and PRB-01 reads 50% today (46% on Cardmarket), so the July figure should not be compared with anything current. Cardlogs also withholds an EV where its two venues disagree: OP-17 reads 194% on TCGplayer and 358% on Cardmarket, a gap too wide to publish either figure until the two venues converge. The Riftbound numbers are in the Riftbound booster box EV analysis.

How does Cardlogs handle graded cards: PSA and BGS prices and populations?

Raw prices are half the story on any card worth grading. Cardlogs tracks graded prices per grade (PSA 10, PSA 9, BGS 10, BGS 9.5, BGS Black Label, and the top grades at CGC, SGC and TAG) beside the raw price, with a graded price chart and the past sales for every grade on each card page. Graded prices are free.

The population side is what makes a grading decision quantifiable. Two cards with the same 3x PSA 10 premium are very different bets if one has twelve gems in existence and the other twelve hundred: the first premium is scarcity, the second is a queue of future competitors. Cardlogs shows the full per-grade population ladder (how many 10s, 9.5s, 9s and below each grader has issued) next to the per-grade prices, refreshed nightly; population is the Premium part. Game-level studies: One Piece, Dragon Ball and Riftbound graded populations.

The July edition quoted a PSA 10 multiple for the Charizard Gold Star (Delta Species). We have withdrawn it: that card's current PSA 10 figure does not pass our own sanity check, and a graded premium is only meaningful when the sales behind it are for the same printing as the raw price.

How does portfolio tracking work across games?

A TCG portfolio tracker is only useful if it prices your collection the way the market does: across sources, nightly, per game. Cardlogs portfolios work in lots. Each entry records what you bought, how many and at what cost, and a portfolio can hold cards from all five games side by side. Every night it is revalued against fresh prices, with graded copies at their per-grade price.

Selling is part of the ledger. Marking a lot sold moves it to a Sold view with realized profit and loss, while held positions keep tracking. Portfolio tools sit on top: Compare two cards side by side, simulate a trade before you make it, read Insights on what drives your value, share a portfolio image, or export it to CSV. The iOS and Android apps send a daily portfolio push (your total, the day's move and which cards drove it) and rare event alerts, such as an all-time-high eBay sale on a card you hold. An Android home-screen widget keeps the total visible.

Getting a collection in is not a retyping job: Cardlogs imports Collectr's CSV export and matches rows by TCGplayer product ID, and values display in six currencies (USD, EUR, GBP, AUD, CAD, JPY) at daily rates.

What does Cardlogs do that one marketplace's price guide cannot?

Every marketplace publishes a price for what trades on it: TCGplayer's market price, Cardmarket's trend, an eBay sold median. Each is right about its own venue and blind to the other two. Cardlogs carries all three on every card, blends them into the Aggregate price, and shows where they disagree, plus Japanese shop prices for Japanese Fusion World singles.

It also computes rather than just displays. The Aggregate price, the Cardlogs Market Cap Index and Cardlogs Box EV are derived metrics with stated methods, recomputed nightly and quotable with dates. A price feed tells you what a card costs; the derived layer tells you whether a game is growing, whether a box is worth opening, and whether a grading fee pays for itself. When the method changes, as it did on September 13, 2026, we say so by date.

What's next for Cardlogs?

New sets are tracked before they release: set pages carry revealed cards and pre-order box prices weeks ahead, with set guides for OP-18, EB-05, FB11, Palworld ESS01 and Riftbound Radiance. Bandai's Naruto card game is on our radar (everything we know about the Naruto Card Game); Cardlogs does not track it yet, and coverage lands once real market prices exist.

A monthly market watch per game runs on the same nightly data, alongside live price lists like the most expensive Riftbound cards and the most expensive Fusion World cards.

Where this data comes from

Cardlogs aggregates prices nightly from TCGplayer, Cardmarket and eBay sold listings (via PriceCharting). As of September 24, 2026 that meant 81,280 priced cards on TCGplayer, 44,488 on Cardmarket and 56,452 on eBay sold data across One Piece, Riftbound, Dragon Ball, Pokémon and Palworld, plus PSA and BGS graded prices and population data. Market cap figures are the summed price of one copy of every tracked card per source; index moves are chain-linked so new cards never count as growth; Cardmarket legs are quoted to September 22 for the reason given above. Japanese Fusion World singles add Cardrush's yen prices. Every figure carries its date; the September 13, 2026 pricing-rule change is disclosed where it touches a number.

Track any card, set or portfolio from this article live on Cardlogs, free on the web and in the iOS and Android apps.