| Raw Materials & Manufacturing |
Variable |
Model as 10.0% of revenue in the first year, falling to 8.0% by Year 5. |
Treating product margin as fixed when it moves with every unit sold. |
| Packaging Costs |
Variable |
Use 3.0% of revenue in the first year, declining to 2.0% by Year 5. |
Rolling packaging into overhead instead of per-order gross margin. |
| Fulfillment & Shipping |
Variable |
Apply 5.0% of revenue in the first year, then improve to 4.0% by Year 5. |
Using one flat warehouse number and missing shipping drag. |
| E-commerce Transaction Fees |
Variable |
Include 1.5% of revenue in the first year, dropping to 1.0% by Year 5. |
Forgetting card and checkout fees in contribution margin. |
| E-commerce Platform Fees |
Fixed |
Carry $3,000 per month from Month 1 through Month 60. |
Scaling it with sales when the model gives a monthly fee. |
| Warehousing Fixed Fee |
Semi-fixed |
Use the $4,000 monthly baseline, then revisit when volume needs more capacity. |
Assuming storage grows smoothly with each order. |
| Annual Marketing Budget |
Semi-variable |
Plan $250,000 in the first year, tied to a $35 customer acquisition cost. |
Treating all marketing as fixed even though spend drives new orders. |
| Salaries |
Semi-fixed |
Model staffing by full-time equivalent steps, since headcount rises by role and year. |
Treating launch staffing as fully variable with revenue. |