You ship a $1,200 graded slab. Two weeks later a return request lands: "not as described." The case that comes back holds a lower-grade copy — or a fake. You refund, because tracking shows delivery and you have nothing that proves a switch. One order just erased a month of margin.
A return policy can't block returns — no marketplace lets it. What it can do is put conditions in writing, tell buyers you keep records, and set up the evidence you'll need if a return comes back wrong. Here's the exact wording, plus what eBay actually lets you enforce.
What eBay lets you require (and what it doesn't)
eBay's Money Back Guarantee sits on top of your return policy. Even a "no returns" seller has to deal with a claim that says the item arrived not as described. So don't write your policy as if you can refuse returns outright — you mostly can't.
What you can do:
- State return conditions in your listing and policy: same condition, original packaging, security seal still applied.
- Photograph the item and seal in the listing itself, so the condition at shipment is on record inside the transaction.
- Deduct from the refund for diminished value in some situations when an item comes back damaged or altered — availability depends on your seller status and eBay's current rules.
- Report the buyer and dispute the return with evidence when the item that comes back isn't the item you sent.
Whatnot and TCGplayer run their own versions of the same structure: the platform decides the case, and documentation is what their reps look at. On every platform, the goal of your wording is the same — make the paper trail exist before you need it.
The three pieces of wording
1. The listing blurb
Put this in the listing description, near your condition notes:
This item ships with a serialized tamper-evident security seal applied to the case. The seal's serial number is visible in the listing photos and recorded before shipment. If you return this item, the seal must still be applied and intact. A returned item with the seal removed, damaged, or missing will be documented and reported, with photos and the recorded serial.
2. The return-policy line
Returns accepted within [X] days. Items must come back in the same condition, with the serialized security seal still applied and undamaged. Removing the seal distorts it and leaves visible damage. A return that arrives with the seal disturbed or missing will be documented and disputed with photographic evidence and the recorded serial.
3. The return-received checklist
Tape this above your packing station. Run it on every return before you refund anything.
- Video the sealed package before opening — label and condition visible.
- Open it on camera. One continuous take, no cuts.
- Photograph the seal close up. Still applied? Intact?
- Compare the serial against your shipment record and the listing photo.
- Match: inspect the card as normal and refund per your policy.
- Removed, damaged, or wrong serial: stop. Keep everything exactly as it arrived. Upload the video, the close-ups, and your original listing photos to the return case, and report the buyer.
How this reads to honest buyers
A seal requirement sounds hostile in your head. Written plainly, it isn't. Honest buyers already return items untouched — the requirement asks nothing extra of them. It reads like the serial number on a laptop: a sign the seller runs a real operation and keeps records. Some buyers read it as a reason to trust the listing more, not less.
Two wording rules keep it that way. Describe what you do — "the serial is recorded and photographed" — not what you suspect. And skip threats. "Fraud will be prosecuted" reads angry and enforces nothing. "A missing seal will be documented and reported" is calm, specific, and true.
When a return arrives
The wording only pays off if the records exist. That takes about a minute per order:
- Before shipping: apply the seal, then photograph it — serial legible — as one of the actual listing photos. The evidence now lives inside the transaction record, not in a folder only you can see.
- Log it: order number, serial, date. A spreadsheet is fine.
- On return: run the checklist above before any refund. Marketplaces put deadlines on disputing returns — inspect the day the package arrives, not the day the refund is due.
If the seal comes back removed, tampered, or missing, what you hand the marketplace is specific: this serial, photographed in this listing on this date, is not on the item that came back. That's a different conversation than "I think the buyer switched the card."
What this doesn't do
Be straight about the limits, because your credibility with a marketplace rep depends on it. A seal is tamper-revealing, not tamper-proof — it can't physically stop anyone from opening a case. It reveals that it happened: peeling distorts the foil and shows damage. And no policy wording guarantees an outcome. eBay, Whatnot, and TCGplayer decide their own cases, and sometimes a case goes the wrong way. What the seal and the wording change are the odds. Fraud favors easy targets, and a sealed, serialized, photographed listing isn't one. When someone tries anyway, you're arguing with dated photographic evidence instead of assertions.
The math is simple. One switched card can cost four figures in a single order. A seal costs under a dollar — packs run from 12 for $8.99 up to 120 for $69.99, which works out to $0.58–$0.75 per seal.
Set it up before the next order
Design your seal in the builder — your logo ghost-watermarked across the holographic foil, serial microtext, an engine-turned rosette, and a fine-line copy-trap raster, with an optional QR that points at a link you choose. Every seal carries its own random serial, never repeated. Higher-volume sellers can order serialized runs of 100–1,000 with sequential numbering under your own prefix, from $79. Then paste the three templates above, photograph your first sealed order, and you're covered before the next return request shows up. For evidence handling in more depth, see the full return-fraud guide.