How auto-linking works

Why linking matters

Real profit needs three things tied together: the card, what you paid for it (the purchase), and what it sold for (the sale). CardZen links these automatically wherever it can, and asks you to confirm where it isn't sure.

The automatic case: capture into a purchase

Cards you photograph inside a purchase batch are tied to that purchase directly — no confirmation needed. Each one already carries its share of the cost, and shows up on the purchase under "Cards in this purchase." This is the cleanest way to keep cost basis accurate, so capture arriving packages into their purchase batch.

What CardZen matches on

For cards captured outside their purchase — or sales synced from eBay — CardZen suggests links using:

• Player, year, set, card number, and parallel.
• eBay title and item details.
• Purchase description, seller, order number, and eBay item number.
• Purchase date and sale date.
• Quantity, lot structure, and known card images.

Confirm suggestions

Review a suggested link before trusting it for cost basis or profit. Confirm strong matches and reject weak ones. A wrong link is worse than no link, because it puts the wrong cost or sale on a card.

Fix or add a link by hand

1. 1Open the card, purchase, or sale you need to correct.
2. 2Remove the incorrect link if there is one.
3. 3On a card with no cost, use Add Purchase to attach what you paid; on a purchase, use Add card under "Cards in this purchase."
4. 4Search for and confirm the correct record.
5. 5Re-check the card's profit numbers after the change.