The package size, shipping weight, category, or manual fulfillment fee can change the model more than the sale price.
Confirm the packed dimensions and weight, choose the closest referral category, and use the manual FBA fee field when Seller Central gives you a known fee.
Small products can look profitable until per-unit ad spend, storage, discounts, and return allowance are included.
Enter those costs as per-unit values and compare the break-even price with your planned selling price before buying stock.
The export reflects the current form state only, so stale browser fields or blank optional costs can make the row look incomplete.
Recalculate after changing inputs, then download the CSV again and keep one export per product scenario.