Marketplace Fee Checklist for Etsy and Amazon Sellers
Marketplace sellers often know their product cost but underestimate the full cost of selling. Etsy and Amazon both create opportunities, but both platforms also create fee layers that must be understood before a product is priced, advertised, or restocked.
This checklist gives sellers a practical way to review hidden costs and avoid profit surprises.
1. Product cost
Start with the direct cost of the item. For handmade sellers, this means raw materials and components. For Amazon sellers, it means supplier cost or retail buy cost. If discounts, coupons, or wholesale tiers affect the cost, document the real landed number.
2. Packaging and prep
Packaging is not decoration only. Boxes, labels, inserts, bags, tape, bubble wrap, and prep center fees all affect margin. On low-priced products, small packaging costs can be meaningful.
3. Marketplace fees
Etsy sellers should account for listing, transaction, payment processing, and possible Offsite Ads fees. Amazon sellers should account for referral fees, FBA fulfillment fees, storage, and other applicable costs. Fee rules can change, so sellers should review current platform documentation regularly.
4. Shipping and inbound freight
Shipping has two sides: what the buyer pays and what the seller spends. Amazon sellers should also divide inbound shipping by unit. Etsy sellers should separate shipping charged from actual postage and packaging cost.
5. Advertising
Ads should be connected to profit, not only revenue. Etsy Ads, Offsite Ads, Amazon PPC, and external traffic can all be useful, but they must be measured against net profit. A campaign that increases sales while reducing total profit needs review.
6. Returns and refunds
Returns do not always appear in the same period as the original sale. A refund reserve helps sellers avoid overestimating profit. Categories with high return rates need more conservative assumptions.
7. Labor and time
Labor is especially important for handmade sellers, personalized products, prep work, and customer support. If the seller's own time is ignored, the business can look profitable while creating a low-paid job.
8. Software and operating tools
Monthly tools, subscriptions, design software, repricers, analytics systems, and bookkeeping services reduce operating profit. These costs may not belong inside every unit calculation, but they should appear in monthly profit analysis.
Which calculator should you use?
- Use the Etsy Profit Calculator for handmade or Etsy listing profit.
- Use the Amazon FBA Profit Calculator for per-unit Amazon FBA analysis.
- Use the Amazon Seller Profit Calculator for monthly business profit.
- Use the Online Arbitrage Profit Calculator to check ROI and max buy cost.
Final thought
Profit leaks rarely come from one giant mistake. They usually come from several small costs that were ignored. A disciplined fee checklist turns pricing from a guess into a repeatable business process.
Before launching, discounting, or restocking a product, run through this checklist and calculate the true margin.