eBay is the best venue for selling sports cards. It's also a chaos machine if you don't have a system. Here's the workflow I've refined over hundreds of sales — from deciding what to list to getting feedback.
Step 1: Batching, not one-offs
Don't list one card at a time. Pick a day each week — Sunday evenings work well for ending on Tuesday/Wednesday, which historically performs better than weekends for cards. Batch your listings: photograph 15–20 cards, then list them all at once. Once you get the rhythm, 20 cards takes about 90 minutes.
Step 2: Photography that actually sells
You need: a lightbox or bright indirect daylight, a black velvet background, and a phone with a decent camera. Photograph card front, card back, and a close-up of any notable flaw. Buyers will ask about condition anyway — show them proactively and you cut questions in half.
For slabs, photograph the label clearly. Grade, cert number, and both sides of the card through the case.
Step 3: Pricing — don't guess
Search eBay completed listings (not active — completed) filtered to "Sold." Look at the last 10–15 sales of the same card in the same condition. Raw cards have their own market, graded cards have theirs. Don't list at what you paid — list at what the market will pay today.
For cards that haven't sold recently (low volume), check COMC and Check Out My Cards for reference pricing. If there's no data, you're pricing in the dark — start slightly high and drop.
Step 4: Listing best practices
Title format: Player Name Year Brand Set Card# /Print Run — Condition. Pack your title with searchable terms because that's how buyers find you. Include player name, year, card company, set name, card number, and any relevant attribute (rookie, refractor, auto, /25).
Use auction for hot, recent, or rare cards. Buy It Now for slower-moving inventory. eBay's "Best Offer" is worth enabling — motivated buyers often just want to transact quickly.
Step 5: Shipping that protects and doesn't overprice
Standard card shipping: penny sleeve → top loader → team bag → sandwich it between two pieces of cardboard → bubble mailer. Total materials cost: ~$0.50. Use First Class Package for anything under 13 oz (most single cards) — it's usually $4–$5 and trackable. Never ship loose cards in an envelope.
For slabs: the PSA case provides protection, but still wrap in bubble wrap inside a padded box. One drop on concrete equals a cracked case equals a ruined grade.
Step 6: Tracking and bookkeeping
Spreadsheet with: card name, what you paid, sale price, eBay fees (roughly 12–13%), shipping cost, net profit. Look at it every month. You'll immediately spot which category of cards is profitable for you and which you should stop chasing.