The core supply list
Package by order value, not by habit
| Order value | Recommended packaging |
|---|---|
| Bulk / commons, under ~$2 | Penny sleeve, plain envelope — tracked if TCGplayer or your policy requires it, but no toploader needed |
| Standard singles, ~$2-25 | Penny sleeve + toploader + team bag, in a rigid or bubble mailer |
| Higher-value singles, $25-100+ | Same as above, plus tracking and enough padding that the toploader can't shift inside the envelope |
| Graded slabs, sealed product | A properly sized box, not an envelope — slabs crack in mailers under normal transit pressure |
The most common packaging mistake
Shipping a toploadered card in a plain paper envelope. Postal sorting machines apply real pressure and can bend a rigid toploader corner right through a standard envelope — the toploader protects the card from bending on its own, but does nothing if the whole package bends around it. A rigid mailer or a well-padded bubble mailer solves this for a few extra cents per order, which is nearly always worth it once you weigh it against a damage complaint.
Overkill is a real cost too. Double-boxing a $1 bulk common, or using a full rigid mailer for a penny sleeve, adds material cost and package weight (which can bump your postage tier) without meaningfully reducing risk. Match protection to value — see the real cost breakdown for how these choices show up in your margin.
Buying supplies in bulk without overcommitting
Penny sleeves and toploaders are cheap enough per-unit that buying in bulk (boxes of 1,000+) usually pays for itself within your first few weeks of consistent selling. Team bags and mailers are worth watching more carefully — buy a mid-size quantity first and see what your actual order-value mix looks like before committing to a bulk order sized for a volume you might not hit yet.
Putting it all together for a single card? Follow the plain white envelope guide — it covers the exact packing order and postage.