After the sale

What you keep on a $40 sale

Updated October 2, 2026 5 min read

I told someone I made thirty-five dollars on a forty-dollar jacket. I had paid five. I had not subtracted anything else.

What you keep on a resale is what the buyer paid, minus the platform's commission, the per-order fee, the shipping label, the packaging and what you paid for the item. On the worked example below, a $40 sale of a $5 item keeps $27.46, not the $35 it feels like in the parking lot.

The notification said $40. I did the math in the parking lot: paid five, so thirty-five. The payout was not thirty-five. The gap was not hidden. It was sitting on five lines I had never added up.

What costs come out of a sale before I get paid?

Five lines sit between the sale price and your payout: the platform fee, the per-order fee, payment processing, shipping and packaging.

1. Platform fee. A percentage of what the buyer paid. On eBay that total includes the shipping they paid.
2. Per-order fee. A flat amount per transaction. Small on a jacket. Loud on an $8 cable.
3. Payment processing. On eBay it sits inside the fee. On other platforms, check whether it is inside the fee or its own line. Guessing the wrong one skews every buy ceiling you set.
4. Shipping. You pay the label, or the buyer pays postage and eBay still takes a cut of that postage. It is never free.
5. Packaging. Mailer or box, tape, label, a scrap of filler. Easy to ignore once. Easy to see across a year.

Then subtract what you paid for the item. If you want the honest number, give that item a share of the gas and the Saturday too. Start with the five lines. The trip math can come later.

A worked example, using the calculator defaults

The example below nets $27.46 on a $40 sale, and it is arithmetic you can check, not a promise about your platform. Assume a $40 item, $8 shipping paid by the buyer, a 13% commission on the total, a $0.40 per-order fee, $0.90 of packaging, and an $8 label. You bought the item for $5. Those are the defaults in the calculator. Swap them for your last sale.

So a $40 sale on a $5 item nets $27.46 in this example, not $35. That is a fine outcome. It is also the number a buy decision should sit against. Plug your last three sales into the calculator before you trust a rule of thumb you heard in a parking lot. Set the sale price from sold listings for the same item, not from what other sellers are asking.

Why cheap items feel busy and pay like chores

The per-order fee and the mailer do not care what the item sold for. On a $40 sale they are about $1.30. On an $8 sale they are the same $1.30. With the calculator defaults an $8 sale nets $4.62 before you subtract what you paid for the item, for the same listing work.

An $8 HDMI cable can take as long to list as a $60 jacket. So keep a minimum net per listing, in dollars, and hold it at the rack.

What is the difference between markup, net margin and return?

Markup divides sale minus cost by cost, net margin divides net profit by the sale price, and return on inventory divides net profit by the item's cost. People use these as if they were the same sentence. They are not.

On the worked example above, markup looks huge, net margin is about 69% of the $40 sale price if you use $27.46 as the net, and return on the $5 is large too. All three can be true at once. Only net margin helps me compare that jacket to an $80 item I paid $30 for.

The number I write down now

Net profit per listing hour. It puts a price on the evening. If two categories both net about $25 a sale, and one takes eight minutes to list and the other takes twenty-five, they are not the same Saturday. The lever can be how long a listing takes, not another dollar on the ask.

Keep reading

• What to sell first when you start reselling

  Things you can name from the object. Leave the mystery bag.

• How to price your first eBay flips with sold listings

  Sold listings first. Mid of the cluster. Then fees, ship, and a ceiling.