About

Know the odds before you grade, rip or bid.

Cardonomics is a set of decision tools for trading card game collectors — Pokémon, Magic: The Gathering, One Piece, Disney Lorcana and Star Wars Unlimited — built to be used on a phone, in the moment before you act.

Your collection app, and then us

Your collection app tracks what you own and what it is worth. Cardonomics does not try to replace it. It helps with the decision in front of you: is this card worth sending to grade, is this box worth opening, and how much should I bid on this lot?

Three tools

Grader turns photos from your phone into measured centering, corners, edges and squareness, so you get an honest estimate before you pay to grade. The preview is open now.

Rip or Not will put what a sealed box returns on average beside what it costs, and beside the odds of the cards collectors rip for. Coming soon.

Bid Buddy works out a sensible maximum for a live auction lot, from its market price and your own rules. Advice you can see; you place your own bids. Free for Chrome now.

Honest numbers

Every number we show says how much it rests on and when it was measured. Where we do not have enough to show a figure, the page says so and why — a blank you can see is better than a guess you cannot. Odds are shown beside the average, never instead of it, and nothing here is financial advice.

Fun, not a casino

Opening packs is fun, and the tools are meant to feel like the hobby. What they will never do is push you to spend: no streaks, no countdown pressure, no celebration for buying. The foil shine is saved for the chase card.