Card shipping guides

What "plain white envelope" means in card selling, what it costs vs BMWT, whether it tracks, and the full seller glossary — eSE, machinable, and more.

Real weighed counts for every USPS letter tier — 10 at 1 oz up to 50 at the 3.5-oz max — plus a card-count postage calculator.

One card or a hundred and fifty: what USPS actually measures, where the toploader method runs out, buying the right postage, and what happens when a letter goes missing.

One card or fifty: the toploader method, the 7–50 card letter, eBay Standard Envelope limits, and what supplies actually cost.

The 2026 cost math side by side, when each option wins, and a monthly savings calculator for sellers.

What a 3 pocket envelope is, how the fold-yourself inserts and the eBay/TCGplayer 24-card kit compare, and where the built-in 50-card version fits.

Letter-rate mailing for raw baseball, football and basketball cards, and when relics, thick stock and graded slabs need a tracked parcel instead. Sports stock is heavier than it looks — weigh before you stamp.

What eSE costs, its 3 oz and quarter-inch limits, why envelopes get returned, how the tracking scans really work, and when a pocketed letter does the job instead.

Shell mailers, rigid mailers, bubble mailers and pocketed letter envelopes side by side — what each format can actually carry, and what it costs you per order.

What a cardboard shield really costs per order once you add sleeves, an envelope and surcharge risk — and which order sizes each one wins.

The honest supplies list by shipment type, the traditional stack priced per order, and what a pocketed envelope replaces.