Know your number before you sell anything
The first move in any sale is knowing what your card is actually worth — not what someone's asking, but what copies have recently sold for. Pull up completed sales on a marketplace like eBay or TCGplayer and average the last five or so, ignoring outlier-high listings that are often foreign sales or padded with 'free' shipping. That average is your anchor. Decide your bottom-dollar number in advance, and lead with exactly what you want when you talk to a buyer. Walking in without a number is how first-timers get talked down; walking in with one lets you hold firm and recognize a lowball for what it is.
As an Amazon Associate, NinePocket earns from qualifying purchases.
Sell to a vendor, or sell it yourself
Every sale comes down to one tradeoff: speed versus top dollar. Selling to a vendor at a card show is a two-minute transaction — you hand over the card, you walk away with cash. That convenience is what the spread pays for. Selling it yourself, whether by renting a table or listing it online, nets more but costs a full day of work, fees, or weeks of waiting for the right buyer. Neither is wrong. If you need money now or just want the card gone, a vendor buys you liquidity. If you'd rather maximize the check and don't mind the effort, sell it yourself. Be honest about what your time is worth before you decide.
What percentage to expect at a show
For a genuinely liquid, in-demand card — think a hot modern slab a vendor can flip almost instantly — 90% of market in cash is a fair target and a reasonable floor. A vendor turns a card like that fast for a quick cut, so you can hold firm. Expect most to open lower, around 80 to 85%, especially on expensive cards, and expect them to assume first-timers want too much. That opening number is the safe-for-vendor figure, not the ceiling. Less liquid or lower-value cards fetch less — the 90% target applies to cards that sell themselves, not to everything in your box. Trade value often runs a little higher than cash if you want something off their table.
Work the floor — never take the first offer
A vendor's job is to buy as low as you'll let them, so the first offer is rarely the best. Walk the floor, hit multiple tables, and ask each what percentage they're buying at — some quote a flat rate, others say it depends on the card. Stay friendly and conversational; this is a negotiation, not a confrontation. Offers vary wildly, and the same card can draw a lowball at one booth and a strong number two tables down. If a vendor lowballs on cash, you can pivot to buying something off their table at a percentage, walking out with cash plus a card you wanted. And if an offer feels wrong, walk away — you'll get lowballed occasionally, so don't take it personally.
Selling online: eBay's reach comes with a fee
eBay is the most reliable way to reach buyers online, and cards often sell for more there than at a show simply because more people see them. The catch is cost: expect roughly 13% in fees plus shipping, and the sale gets reported for taxes. Price to net your target after all of that, not before. eBay works well for singles and graded slabs, where condition is fixed and disputes are rarer. It's also slower and more hands-on than a vendor sale — you photograph, list, pack, and ship, and you carry the risk of a buyer dispute, which is its own subject below. For most single cards of real value, though, it's the deepest pool of buyers you'll find.
Facebook Marketplace and local cash sales
Facebook Marketplace and other local channels can get you close to full market with no platform fees, since it's a private cash deal. The downside is noise and risk: expect a flood of lowballs and 'trade in my favor' offers, and a card can sit for weeks before the right buyer appears. Safety matters more here than anywhere else. For anything beyond pocket change, meet in a public place — many police stations have designated exchange spots — and deal in cash only. Never hand over a card for a cashier's check from a stranger; they're too easy to fake and impossible to verify on the spot. Local selling rewards patience and caution, not speed.
The eBay dispute problem sellers need to understand
If you sell on eBay long enough, you'll meet the Item Not As Described dispute, and it's worth understanding before it happens. The system — including automated review — leans heavily toward the buyer. A buyer who's simply unhappy can open an INAD case directly or as a chargeback with their bank, and these frequently go the buyer's way even against strong seller evidence. New sellers with little feedback are the most exposed, because the platform favors established accounts. This isn't a reason to avoid eBay, but it is a reason to sell smart: build feedback on low-risk items first, keep your listings scrupulously accurate, and understand that high-value, dispute-prone items are the worst place to start.
Never sell sealed product or loose packs on eBay
One rule comes up again and again from experienced sellers: don't sell sealed product or loose packs on eBay. Return-and-swap fraud is rampant — a buyer rips the packs, doesn't hit what they wanted, and files a 'not as described' claim, or returns resealed or tampered product you can't resell. Because eBay defaults to the buyer, these cases are brutal to fight, and once packs are opened the product is worthless for resale. eBay is built for singles and slabs, not sealed. If you're moving sealed boxes or packs, sell them locally for cash or on platforms that back sellers more reliably in these situations. The peace of mind is worth more than the few extra dollars you might squeeze out.
Protect every sale you ship
Whatever you ship, close every avenue a buyer could exploit. Use tracked shipping with delivery confirmation — untracked packages invite 'item never arrived' claims you can't contest. Take thorough photos before it leaves your hands: front, back, corners, edges, and surface under bright light, so the card's condition is documented. Write an accurate, honest description; overselling condition is the fastest way to lose a dispute. And pack it properly — a sleeved card in a rigid toploader or a semi-rigid card saver, inside a bubble mailer, arrives in the condition you sold. The onus is on the seller to prove the card left in the shape described, so build that proof into every sale by default.
Get paid safely
For in-person deals, cash is the only safe option on anything of real value. If you have to use an app, many sellers prefer Zelle, which is generally treated as final between bank accounts — though you should still only use it with buyers you trust, since a mistaken send is hard to claw back either way. Be wary of credit cards and PayPal Goods & Services from strangers: both can be reversed through a chargeback well after you've shipped, which is exactly the opening scammers use. The theme across every payment method is the same — the more reversible the payment, the more it can be turned against you once the card is gone.
If a dispute hits, escalate and document
If you lose an obviously fraudulent dispute, don't accept the automated decision. Push to reach a live agent by phone or chat — human review reverses clear-cut fraud far more often than a bot does, so act fast and stay persistent. It's not guaranteed; some sellers lose even with clean, long histories, but escalation is your best shot. If a return is forced on you, film yourself opening the package and inventory everything. If it comes back opened, incomplete, or not in sellable condition, that recording lets you open your own claim that the buyer returned it in a different state than you sold it — a tactic sellers have used to recover their money after a bad ruling.
The bottom line
Selling single cards well comes down to a few habits. Know your number before you talk to anyone — average recent sold prices and set a firm floor. Decide whether you're buying speed or squeezing out top dollar, and pick your venue to match: a vendor for a fast exit, your own table or online for maximum return. Shop every offer, because the first is rarely the best. Online, respect the fee, avoid selling sealed product on eBay, and armor every shipment with tracking, photos, and honest descriptions. Take cash in person, favor irreversible payments, and if a dispute hits, escalate to a human and document everything. Sell carefully and the money follows.