Market cap

market cap (card, grade) = graded population (card, grade) × value (card, grade)

We show PSA 10 by default, with other grades on each card page. Japanese and English printings are separate cards with their own populations, values and market caps. Until licensed PSA population data is connected, rankings are ordered by PSA 10 value and the market-cap column shows “—”.

Value (the floor)

The value of a card in a grade is the lowest current asking price for that exact card, language and grade:

If there are live, approved listings on TCGTracker, it is the lowest of them.
Otherwise it is the current market value from our pricing partner, PriceCharting, converted to AUD.
If there is no current price, we use the most recent sale and label it “last sale”.
With no data at all we show “—” and leave the card out of the rankings.

PriceCharting’s PSA 10 figure is PSA-specific. Its grade 9 figure combines PSA 9 and BGS 9 sales, so we label it “Grade 9”.

Outliers

Asks below 50% of a card’s 30-day median sale price are ignored as likely errors or scams, once there are at least 3 sales in that window. Staff can exclude individual data points; every exclusion is logged.

Australian dollars

All prices are in AUD. USD prices are converted with the Reserve Bank of Australia’s daily indicative rate (table F11.1, CC BY 4.0). We store the original price, currency and the rate and date used.

How often it updates

Values: every 4 hours
Population: daily, once a licensed source is connected
Exchange rates: daily
History and 7/30-day changes: one snapshot per day (Melbourne time)
Retail drops: every 1–2 minutes for watched products, every 5 minutes for discovery, 24/7

Sources

Prices: PriceCharting (with permission), and the TCGTracker marketplace
Population: PSA (licence pending)
Exchange rates: Reserve Bank of Australia
Retail availability: the retailers’ own public product pages

Downloads and licence: Data. API: API. Values are indicative, not financial advice.

Methodology