Most costing goes wrong in the same place: the price on the invoice is for a 5kg bag and the recipe uses 180g — or the sheet of leather cost $90 and the wallet takes a tenth of it. Cost Builder does that arithmetic every time, whether what you make is food or not, so the margin you are looking at is the real one.
Free on every plan, including the free account.
Each ingredient or part, with what the pack costs and how much is in the pack.
The per-unit cost is worked out from the pack price, so 180g of a 5kg bag is 180g of a 5kg bag.
The margin appears next to it, in money and as a percentage. No hunting for it.
A clean PDF you can hand to a partner, a bookkeeper or an accountant — or keep for the next time prices move.
Cost Builder is one way. These explain the job itself — free to read, nothing to sign up for.