2022 Brock Brock Graded 10 Gem Mint 2023 Leaf #19 San Francisco 49ers Purdy Rookie Card From a PSA 7 to a PSA 8. That might sound like a small jump, but in the world of high end Pokmon cards and grading, even a single grade increase can mean thousands in added value., This 1999 PSA grades ~41,700 cards per day. If the average grader processes around ~600 cards daily, that points to roughly ~135160 active graders across sports and TCG. That level of scale is impressive Pokemon Card Grading Explained [UPDATED 2021] GGWP Academy