Sort cards by sport, year, set, player, and condition
Separate valuable cards, rookies, autographs, and graded cards
Research recent sold prices on eBay, COMC, 130point, and auction sites
Check condition carefully for centering, corners, edges, and surface
Use sleeves, top loaders, and team bags to protect cards
Decide whether to sell individually or in lots
Sell high-value cards individually
Sell common cards in bulk lots
Choose a selling platform such as eBay, Facebook Marketplace, Whatnot, COMC, or local card shops
Compare seller fees, shipping costs, and audience size
Take clear photos of the front and back of each card
Write accurate titles with player name, year, set, and card number
Include condition notes and mention any flaws
Set a fair price based on recent sales
Use auction format for uncertain-value cards
Use fixed-price listings for known-value cards
Package cards securely with rigid protection and bubble mailers
Ship with tracking and insurance for expensive cards
Communicate quickly with buyers
Keep records of sales, fees, and shipping costs
Consider consignment for rare or high-end cards
Avoid cleaning or altering cards
Be honest about authenticity and condition
Check local card shows and shops for direct sales
Sell at the right time if a player is trending or in season