Guide
Shipping can be a profit line, not a cost line
Most sellers treat shipping as a wash: the buyer pays it, the carrier takes it, nothing to see. On a live auction that is usually wrong — and the gap is big enough to be worth a line of its own in your accounts.
The gap comes from two places
They are separate effects and it matters which is which, because only one of them scales with how you pack.
1. The rate spread, per order
What TikTok collects from a buyer for shipping is set by your own shipping template in Seller Center. What a label costs is set by your carrier account. Those are two different numbers, and for most sellers the collected figure runs a dollar or two above what a Ground label actually costs.
2. Combining — the bigger one on an auction
Buyers pay shipping per order. You pay per box. A live auction buyer who wins four lots generates four orders — and four shipping collections — that go out in one box, under one label. Combining is what makes boxes fewer than orders, and every order you avoid buying a second label for is kept in full.
One show, worked through
Real proportions from a single stream. Your numbers will differ; the shape will not.
| Orders that paid shipping | 180 |
| Boxes actually shipped | 84 |
| Shipping collected from buyers | $1,284.00 |
| Paid to the carrier in labels | − $712.00 |
| Kept on shipping | + $572.00 |
Per order that is $7.13 collected. Per box it is $8.48 paid — more than one order’s shipping. The show is still ahead because each box carried 2.1 orders on average, so a box that cost $8.48 to send had already collected $15.29.
That is the part worth internalising: on an auction, combining is doing most of the work, not the per-order rate spread. A catalogue store where every buyer orders once sees almost none of this.
What it takes to actually keep it
- Your own carrier account. The spread only exists at your own negotiated rates. Buying through a reseller hands the difference to whoever is reselling it.
- Orders combined correctly. Same buyer, same address, same live session. Merging across sessions or past the platform cap is how a box ends up undeliverable or an order unfulfillable.
- Weights you did not guess. A box priced on a guessed weight is a carrier billing adjustment waiting to happen — charged back weeks later, quietly, against the margin you thought you made.
- The label bill actually written down. This is where it usually falls apart. Collected shipping shows up in your platform reports automatically; what you paid arrives as one carrier invoice days later. If nobody enters it per show, the books read collected shipping as pure income and the margin is fiction.
Where it should live in your accounts
Keep it as its own line, not inside revenue. Fee percentages and gross margin are calculated against item revenue, so folding shipping income into the same number makes both unreadable — your fee rate looks lower than it is and your product margin looks better than it is.
Track it per show, too. A monthly total tells you shipping made money; a per-show figure tells you which shows, which is the one that changes what you do next.
How LASI does it
Shipping collected is pulled from the orders on the streams your show actually ran on. Orders are combined into the boxes that will really be bought — same buyer, same address, never across a live session — and each box is priced on the cheapest service that can legally carry it, from a weight you set once rather than one guessed per parcel. The label bill goes on the show, the margin is a line of its own in the P&L, and a show whose bill has not been entered yet is flagged instead of counted as pure income.
Today the labels come from your own shipping software or from TikTok, and LASI tracks what they cost against what buyers paid. Buying them inside LASI is coming soon, on your UPS account at your own negotiated rates. LASI will not resell postage — the savings are yours because the account is yours.