DOUKUA / PRACTICE & METHODS
Unit economics scenario
One currency, one unit. Initial figures are example inputs; replace them with your own quotes.
Calculation basis
Variable cost = product + delivery + other costs + price × (sales fee + returns reserve). Contribution = price − variable cost; margin = contribution ÷ price. Fixed overheads and taxes you did not enter are excluded; this is not net profit. The tool supplies no tax or FX rates. Both percentage inputs use the selling price; the returns reserve is a budget assumption.