A private research tool for pricing collectible trading cards.
What it is
TradingCardQuant collects published price information for individual Pokémon
trading cards — sold and asking prices, graded-slab population counts and
card catalogue data — and builds a valuation for each card from it. It is
used by one person to decide what a single card is worth before buying or
selling it.
Who runs it
TradingCardQuant. It is not a company, not a service, and has no users other
than its operator.
How it uses the eBay APIs
Read-only
It calls the eBay Browse API to read publicly listed items. It never
creates, edits or ends a listing, never places a bid or an order, and
holds no eBay user's authorisation.
Per card, not per category
Every number it derives is for one specific card — for example the
typical sale price of one graded card. It does not compute average
selling price or gross merchandise value for any eBay category, and
publishes nothing at the category level.
Private
The analysis itself is not on the public internet. It runs on a private
server, is reachable only over a private network by its operator, and
the interface is read-only — there is nothing here to sign in to and no
card data on this site.
eBay Marketplace Account Deletion
This application is subscribed to eBay Marketplace Account Deletion /
Closure notifications. The notification endpoint is
/ebay/marketplace-account-deletion on this host. When a notification arrives,
every stored field identifying that eBay user is cleared, and the fact that
the notification was received and acted on is recorded without retaining
the user's identity.