True Profit Per Order: The Number Most Sellers Get Wrong

Ask most multi-channel sellers what their best product is, and they’ll name the one that sells the most units. Ask them what it earns, and the room goes quiet.

That gap is where margin disappears.

Revenue is a vanity metric

A £30 sale on TikTok Shop and a £30 sale on eBay are not the same £30. Different marketplaces take different cuts, your shipping cost depends on weight and destination, and a single return can wipe out the profit from three clean orders.

If you’re managing this in a spreadsheet, you’re almost certainly looking at gross revenue or, at best, gross margin — the difference between sale price and cost of goods. Neither tells you what landed in your bank account.

The real formula

True profit per order looks more like this:

sale price
  − cost of goods
  − marketplace commission
  − payment processing
  − shipping (label + packaging)
  − allocated returns cost
  − channel subscription / per-listing fees
= true profit

Every line after “cost of goods” is the part sellers skip — and every one of them varies by channel. A product with a healthy 45% gross margin can be a loss-maker on a high-commission channel once you add postage and a 6% return rate.

Why per-channel matters

The same SKU can be your most profitable line on Vinted and your least profitable on TikTok Shop, purely because of fee structure and return behaviour. If you only see a blended average, you’ll keep pushing volume to the channel that’s quietly costing you money.

Splitting profit by channel changes decisions: which products to promote where, which listings to pause, and which channels deserve more of your inventory.

How Synergia handles it

Synergia360 writes a cost ledger entry for every order and estimates the per-channel fee at the moment the sale lands — commission, payment processing, and fulfilment — so the profitability dashboard shows true profit per order, per SKU, and per channel without a single spreadsheet formula.

Returns are allocated back against the original order, so your “bestseller” is judged on what it actually keeps, not what it grosses. When the month closes, those numbers are locked into an immutable snapshot you can trust at tax time.

The takeaway

You can’t optimise what you can’t see. Start measuring profit after every cost, split by channel, and the picture of your business changes — usually in ways that save you money within the first month.

Want to see true profit on your own orders? Start your free trial and connect your first channel in under 60 seconds.