Platform Comparison Calculator
Compare your item across Etsy, eBay, Whatnot, Poshmark, and Shopify side-by-side to see where you keep the most money.
Platform Comparison Calculator
Same item, same costs — see which marketplace deposits the highest profit in your bank account.
Shopify Store
Etsy (US)
Whatnot (US)
eBay (US)
Poshmark (US)
Quick Answer: Core Formula & Key Drivers
Comparing platforms on a $50 sale: Shopify nets the highest ($46.85) due to zero marketplace take-rate, Whatnot nets $44.25 (8% commission), Etsy nets $44.80 (6.5% + 3% + 45¢), and eBay nets $42.80 (13.6% + 40¢). Selling through an owned Shopify store saves $3–$5 per transaction over marketplaces.
Published Marketplace Fee Schedules
| Cost Parameter | Published Rate | Application Base | Rate Schedule Date |
|---|---|---|---|
| Platform Commission | Standard Schedule | Gross hammer / listing price | October 2024 |
| Payment Processing | 2.9% - 3.3% + Fixed | Gross order total charged to card | October 2024 |
| Arithmetic Precision | Ceiling Round-Up Cent | Guarantees net payout meets goal | Standard |
Worked Example: $50 Item Multi-Platform Showdown
Scenario: You have an item priced at $50.00 with $5.00 shipping charged and $15.00 inventory cost.
What Is Not Included In This Model
To maintain mathematical integrity, our tool excludes subjective or location-dependent expenses:
- ✕Monthly platform subscription costs (e.g. Shopify $39/mo or eBay Store subscriptions)
- ✕Customer acquisition / ad costs to drive traffic to independent stores
Frequently Asked Questions
Which platform has the lowest seller fees?+
For independent stores, Shopify Payments (2.9% + 30¢) is lowest. Among marketplaces, Depop and Mercari operate 0% seller fee models, while Whatnot charges 8% and Etsy charges 6.5% + 3%.
Related Tools in Seller & Reseller Tools
Reverse Price Calculator
Solve backwards: Enter your desired profit and item costs to calculate the exact listing price needed.
True Profit Calculator
Calculate what you actually keep after platform take rates, payment processing, shipping supplies, and product costs.