A four-child kitchen-goods parent shows $9,150 of monthly sales and looks fine at parent level. The child view tells a different story (unit cost $8, blended Amazon fees 30%):
| Child | Sessions | Units | Sales | Conversion | Est. contribution |
|---|
| Gray, 2-pack | 2,600 | 310 | $4,950 | 11.9% | +$985 |
| White, 2-pack | 1,900 | 185 | $2,960 | 9.7% | +$592 |
| Gray, 4-pack | 480 | 41 | $1,140 | 8.5% | +$470 |
| Red, 2-pack | 1,150 | 6 | $100 | 0.5% | −$22 |
The red child consumes 19% of the family's sessions and converts at 0.5% — shoppers click it, dislike something (shade mismatch between the photo and the product is the classic culprit), and many leave without switching to a sibling. Fixing or removing that one child is worth more than any optimization to the gray bestseller, and nothing at parent level would ever surface it.
That is the core habit this tool builds: judge each child on its own sessions, conversion, and contribution — never on the family's averages.