Shipping cards to PSA is the moment where a “$50 card” can turn into a “$500 card”… or a bent corner. The goal is simple: immobilize the cards, protect from crushing, protect from moisture, and make the package tamper-resistant —without doing anything that risks surface damage. Below is the exact approach we follow at Graded Investors , plus a full material list you can copy. The #1 Rule: Nothing Should Move If your cards can slide, flex, or rattle inside the box, you’re one