Most money lost on a live stream is not lost on condition. It is lost on buying the right card from the wrong set. These are the tells that move a price, in the order they matter.
The same artwork gets reprinted for decades. A card worth $250 and a card worth $15 can share a name, a number and a picture. Four things separate them:
Bottom right of the artwork on most cards. It is small, and on camera it is often the only thing distinguishing a $200 card from a $6 one.
Bottom of the card, like 4/102. The second number tells you the set size, which narrows the set even when the symbol is unreadable.
A 1st Edition stamp to the left of the artwork, or a Shadowless card with no drop shadow on the art box. Either can multiply the value several times over.
A code like ZAP-B58-7LA printed on the face means a World Championship deck reprint. Same art, same number, a fraction of the price. This one costs people hundreds.
A Jirachi 9/107 came up on a stream. The original EX Deoxys holo runs about $250. The Worlds reprint of the same card, same number, same art, is worth $15 to $29, and the only difference visible on camera is a small deck code printed on the face.
We paid $98 for the reprint. CardHawk now reads that code, and when several sets share a card number with no tell visible, it shows you the cheapest one and the range rather than the most flattering number. An app that guesses high is worse than no app.
Foil pattern is one of the hardest things to judge through a phone camera and a stream, and the gap between the versions is frequently 5 to 10 times.
Ask the seller to tilt the card under the light. A seller who will not tilt it is telling you something. When CardHawk cannot see the foil clearly, it says so instead of picking one.
Japanese cards are often far cheaper raw than the English print, and occasionally far more expensive. Check the text and the number format before you decide the price you are looking at belongs to the card on screen.
Graders weight four things, and centering is the one people misjudge most:
CardHawk photographs the card, measures the borders the way a grader does, and turns that into odds for each grade rather than a promise.
This is arithmetic, not optimism. Grading costs roughly $80 per card with PSA once you include shipping both ways and insurance. So:
What it is worth graded (weighted by your realistic odds at each grade)
minus the $80 fee
minus what the raw card is worth today
= what grading actually earns you
A $30 raw card that has a strong chance at a 9 and an outside chance at a 10 is usually not worth grading. A $30 raw card with a genuine 10 chance often is. The difference is the odds, and the odds come from the centering. CardHawk does this calculation for you and shows the break-even.
Decide the number while you are calm, not while a timer is counting down. That is the entire point of the overlay: the number is already on screen before you feel anything.
Shipping, tax and buyer fees are real money. CardHawk's ceiling already divides out tax so the number you see is what you can actually bid.
Another one will come up. There is always another one. The cards that hurt are the ones bought $40 over because it felt close.
Every lot you win is scored against what it was worth that day. A bad habit shows up in a week instead of at tax time.
Most collections are one or two cards and a long tail. Knowing which two changes what you insure, what you grade and what you sell first. CardHawk breaks the value down by set so the answer is obvious at a glance.
CardHawk checks every one of these on the card in front of you, in about a second.
Coming to the App Store