Formula contract
What the model calculates.
- Valid revenue = attributed revenue × (1 − refund rate)
- Contribution before campaign = valid revenue − COGS − platform/variable costs − affiliate commission
- Campaign spend = creator fees + samples/shipping + usage rights + paid amplification + ops fee
- Contribution after campaign = contribution before campaign − campaign spend
- Modeled contribution ROI = contribution after campaign ÷ campaign spend
