How to check a Pokémon card's value
Pricing a Pokémon card takes three steps: find the exact card, judge its condition, then look at what that card has recently sold for.
1. Identify the exact card

Look at the bottom of the card. The card number (for example 4/102) and the set symbol tell you the set. Check for a 1st Edition stamp, a Shadowless border, reverse holo foil or a promo stamp: each is a different print with a different price.
2. Judge the condition

For raw cards, check the corners, edges, surface scratches and how centered the borders are. Small flaws drop the value a lot. For graded cards, the grade on the slab (PSA 10, PSA 9 and so on) does this for you.
3. Use recent sold prices

Search sold listings for the same card in the same condition or grade, and look at several recent sales rather than one. Asking prices on unsold listings are often far above what buyers pay.
Price guide sites and apps collect these sales for you. They are a good starting point, but check the recent sales behind the number for expensive cards.
How GrailCart values cards
Every card in our packs is valued from recent sales of that exact card and grade, and we publish every card and its odds before you open a pack. If you pull a card you don't want, you can sell it back instantly at 100% of that value.
See also: price guides by set · PSA 10 card values · most valuable Pokémon cards