👑 EXCLUSIVE TOOL
Reseller Inventory Tracker
Track every item across Whatnot, eBay, Mercari, and Poshmark. See your ROI, calculate per-item profit, run monthly P&L reports, and compare platform fees.
➕ Add Inventory Item
📊 Dashboard
Add inventory items to see your dashboard metrics.
📋 Inventory
| Item | Platform | Category | Cost | List $ | Status | Acquired | Profit |
|---|
💰 Profit Calculator
📈 Monthly P&L Summary
💵 Platform Fee Comparison
See what each platform takes from a sale. Rates as of 2025.
| Platform | Seller Fee | Payment Processing | Total Fee | On a $50 Sale | You Keep |
|---|---|---|---|---|---|
| Whatnot | 8% | 2.9% + $0.30 | ~10.9% | $5.75 | $44.25 |
| eBay | 13.25%* | Included | ~13.25% | $6.63 | $43.37 |
| Mercari | 10% | 2.9% + $0.50 | ~12.9% | $6.95 | $43.05 |
| Poshmark | 20%** | Included | ~20% | $10.00 | $40.00 |
* eBay: 13.25% avg for most categories. Varies 3-15%. ** Poshmark: flat $2.95 for sales under $15, 20% for $15+.