Your Shopify margin, on one page

1Where an order's money goes

kept before ads = price − Shopify Payments − the label − packing − landed cost

Shopify Payments: 2.9% of the whole charge plus $0.30 on Basic, less on larger plans; another gateway adds 2% on Basic. The label is USPS's card by weight and zone: plan on the far end until you know your zones.

2The pound line

Under a pound is one flat rate. From a pound up, every part pound rounds up: 16.1 oz bills as 2 lb.

saved a month = (rate now − rate under the line) × orders

Weigh the packed parcel. Within about 3 oz of a line, trim the box, fill or insert; further is a redesign.

3The free-shipping line

what the line costs a month = orders over the line × the average label

It pays only if the orders and baskets it brings keep that much more. Test it like a price: move it, measure four weeks against four.

4The compare-at

A "was" price is a claim about the past. The FTC's guide asks that it was openly and actively offered, for a reasonably substantial period, in good faith (16 CFR 233.1).

Half or more of the catalogue under its own compare-at: the sale is your price. Offer it for real or take it off, then test the price itself.

5The most an ad sale can cost

the most one ad sale can cost = kept before ads

break-even ROAS = price ÷ kept before ads

A campaign under it loses on every sale it buys. The platform's credit includes sales that would have happened anyway: keep a margin of safety.

6A cheaper label lowers the bar

Every dollar off the label is a dollar more kept, so a parcel trimmed under a pound lowers the break-even ROAS on every campaign that sells it.

Repeat customers can carry a first order that loses a little: price that with your own repeat rate, never a hope.

7Every variant, from one export

Shopify Admin, Products, Export: Variant Grams and Variant Compare At Price.

Grams may be the product alone: add the box and fill before you trust a line. The course reads the file in your browser; nothing is uploaded.

8In order

1. Parcels just past a line, the most orders first.
2. The compare-at policy: real, or gone.
3. The free-shipping line and the ad ceiling, on your own numbers.