For trading cards, getting them "graded" (rated on a scale of 1–10 for condition) by PSA can significantly increase their market value. 3. Best Platforms for Buying and Selling
Before you buy or sell, you must know what an item is worth. Market value is driven by rarity, condition, and athlete popularity.
Counterfeits are common. Professional authentication is the only way to guarantee an item's value and make it "liquid" (easy to sell).
Ensure any item you buy comes with a COA from a reputable TPA, not just a random handwritten note.
Platforms like Facebook Marketplace or Craigslist allow for cash transactions and no shipping fees, though they carry higher security risks. 4. Tips for Sellers