What cost basis includes
Cost basis is the total you paid to acquire a card, not just the sticker price. It includes the item price, shipping, and any buyer fees, and for a card you had graded yourself, the grading cost. Adding those in matters because they are real money out of your pocket, and leaving them out makes every card look more profitable than it was.
The cleanest habit is to record basis at the moment of purchase, when the numbers are in front of you. Reconstructing it months later from memory is where errors creep in, and those errors quietly distort every gain-or-loss figure that follows.
Why it is the foundation of tracking
Your unrealized gain or loss on a card is its current value minus its cost basis. Without an accurate basis, that calculation is meaningless, and you cannot honestly say whether a purchase worked out. Basis is the anchor the whole portfolio view hangs on.
At the collection level, tracking basis reveals where your money actually went. A collection can look valuable while most of the money sits in a handful of cards that have gone nowhere. Only by comparing value against basis do you see that clearly.
Values and records
Keep the value you maintain attached to the right card
CardGhost does not fetch prices. See how collector-entered values, grades, costs, photos, and notes stay connected in one inventory.
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Comparing a card purchase against your own cost assumptions? Calculate landed cost and break-even.
Setting basis when you have no receipts
For older purchases with no record, estimate honestly and note that it is an estimate. A reasonable approach is to use what the card typically sold for around when you acquired it. An approximate basis you have flagged as approximate is far more useful than no basis at all.
Going forward, capture basis at purchase so the estimating problem never repeats. New cards should enter your records with their true cost the day they arrive.
How CardGhost helps
CardGhost records the price you paid alongside each card and uses it as the basis for your unrealized gain or loss, automatically, across the whole collection. You can see gain and loss by card and in total, and break it down by category and grade.
CardGhost is a manual tracker, so you enter the costs and values; it keeps the math and history. Start free without a credit card and upgrade for unlimited cards when you need it. See the pricing page for details.
