PSA 10 vs PSA 9: why one grade changes the price so much

Why a PSA 10 Pokémon card often sells for several times a PSA 9 of the same card, which cards have the biggest gap, and how to check the gap for any card from recorded sales.

By Cardboard Terminal · 2026-10-20

Two copies of the same Pokémon card, graded by the same company, one grade apart, can be priced as if they were different cards. On popular vintage cards a PSA 10 routinely sells for three to ten times a PSA 9. On a modern card with a huge population of 10s, the gap can be under 30%. Understanding why tells you which grade to buy and which to sell.

What the grades mean

PSA grades on a 1 to 10 scale. A PSA 10 (Gem Mint) is a card with no visible flaws under magnification: sharp corners, clean edges, a centered image and an unblemished surface. A PSA 9 (Mint) allows one minor flaw, typically a touch of whitening on a corner or slightly off centering. To the naked eye most 9s and 10s look the same. The price difference comes from scarcity and from what collectors are willing to pay for the top of the registry.

Population drives the gap

Every graded card has a published population: how many copies PSA has graded at each level. On a 1999 Base Set holo, the share of submissions that come back as a 10 is small, because the cards were printed with rough centering and most have been handled for 25 years. Few 10s and many 9s means the 10 carries a large premium. On a card printed last year, where collectors submit pack-fresh copies and most grade a 10, the 9 is the rarer grade and the premium for a 10 is modest. Our card price pages show the PSA population per grade next to the prices, so the ratio is visible for any card.

Where the gap is biggest

• Vintage holos (Base Set, Jungle, Fossil, Neo): low 10 populations, strong collector demand at the top grade.
• 1st Edition and Shadowless prints: even fewer 10s exist, so the multiple grows further.
• Japanese promos with small print runs.

Where it is smallest

• Modern alternate arts and special illustration rares from the last few sets: high 10 populations, so a 9 is only moderately cheaper.
• Cards graded in the thousands at both grades, where the market treats them as near substitutes.

What it means when buying

If you buy for the card and not the grade, a PSA 9 of a vintage holo is often the best value: the same art, a near-identical slab, a fraction of the price. If you buy for appreciation, the PSA 10 has historically carried most of the upside on scarce vintage cards, and most of the risk when demand cools. On modern cards the 9 is frequently the better buy because the 10 premium is thin and the 10 population keeps growing as more copies are submitted.

Check the gap for any card

Open a card's price page, for example Charizard, pick the card and compare the PSA 10 and PSA 9 rows. Both prices come from recorded sales, with the number of sales in the last 30 days shown so you can tell an established price from a thin one. The deal finder uses the same per-grade comps when it ranks live listings.