Pre-Grade is an AI vision tool available on the Premium tier that analyses your card across four dimensions: centering, corners, surface, and edges the same criteria used by PSA, BGS, and CGC
If you include the basic ex cards (which look great, by the way) that goes up to 21 pulls from 40 packs
Like most Pokmon cards, the value of Mewtwo-EX depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Evolutions)
You dont have a choice here
Centering tolerances by grade PSA centering requirements become progressively more lenient down the scale: PSA 10 (Gem Mint): Centering must not exceed approximately 55/45 on the front and 75/25 on the reverse PSA 9 (Mint): Centering must be approximately 60/40 or better on the front and 90/10 or better on the reverse PSA 8 (NM-MT): Centering must be approximately 65/35 or better on the front and 90/10 or better on the reverse PSA 7 (NM): Centering must be approximately 70/30 or better on the front and 90/10 or better on the back Notice that reverse centering requirements remain constant at 90/10 from PSA 7 through PSA 9, indicating that back centering issues were historically common