Price a collection by checking each card against the correct printing and condition, building a realistic reference total, and testing your offer against expected resale proceeds and costs. A percentage of market value is a starting point. The contents of the collection still need to justify the price.
Start with the cards that change the offer.
Separate raw singles, graded cards, sealed products and bulk before building your total. Keep games and languages identifiable. A useful first pass is to pull out the higher-value cards, then check how much of the remaining collection deserves individual pricing.
Count quantities as you go. Give every individually priced card a row with its name, set, collector number, language, printing, condition and quantity. For bulk, record the count and the valuation method separately so it does not inherit the price of a more valuable group.
Confirm the version before you trust the price.
Two cards with the same name can belong to different sets, finishes or printings. Match the collector number and set, then check language, edition and finish. Inspect the physical card for condition before using a condition-specific reference price.
In Vendilot, point your phone at one card and tap to scan with SmartScan. Repeat for the next card, then review the matches together. If a match needs a closer look, compare the printing choices and identifying details. For slabs, check the grading company, grade and label information against the card in front of you. Identification is not an authentication service.
- Use the matching printing, not the first search result.
- Keep played cards separate from near-mint copies.
- Record uncertainty while the seller is still at the table.
Build a reference total you would use yourself.
Use a consistent price source and record when you checked it. For each row, multiply the relevant per-card reference by the quantity, then add the rows. Treat this as a valuation reference, not money already earned.
If a card has little useful pricing history, inspect comparable sold results. Match the card, language, printing, condition and grade closely. A listing asking price is not the same as a completed sale. Thin or inconsistent evidence is a reason to examine the card more carefully, not to fill the gap with the highest number available.
Test the percentage against the way you sell.
Apply a buying percentage to the reference total to draft your offer. Then work through a second number: what you expect to realize when these specific cards sell. Those two totals may differ if you expect discounts, slower sales or a different selling channel.
Subtract the proposed purchase price, modeled selling fees and direct costs from expected resale proceeds. The remainder is an estimated resale spread. It can still be consumed by unsold inventory, changing prices, returns, unmodeled expenses and your time. Do not treat it as actual profit.
Keep the accepted deal attached to the cards.
When you agree on a price, record the actual amount paid, purchase date, quantities and any useful notes. Keep the accepted price separate from the original offer if the negotiation changed it. Give the purchase a name you will recognize later.
Carry that purchase into inventory as one lot. Allocate its cost across the individual cards using a consistent internal method, and retain the purchase total so the allocation can be checked. When a card sells, you should be able to follow it back to the collection it came from.
Try the numbers from this guide with your own assumptions.
Use the collection offer calculator