Keep cold-customer discounts at or below 25.1% if you want a three-point profit buffer.
New customers include your ad cost. Repeat customers do not.
| Discount | New customer | Repeat customer |
|---|---|---|
| Full price | $28.10 | $66.10 |
| 15% off | $13.10 | $51.10 |
| 30% off | -$1.90 | $36.10 |
| 40% off | -$11.90 | $26.10 |
75 new orders contribute -$142.50. 25 repeat orders contribute $902.50.