Pitchers, Hitters, and PSA Grades: The PSA Grading Multiplier for MiLB Prospect Cards Let's check if it's worth grading Prismatic Evolutions cards. The list is created by assuming the grading cost is $18.99. The prices are from tcgplayer & eBay. Subscribe if you want to PSA Graded Card Sleeves The Pennysleever 1 unit (100 sleeves) Protect Your Collection in Style Keep your PSA & BGS graded cards safe with Graded Guards durable, snug fit protectors designed to shield your slabs from scratches, scuffs, and everyday wear.