Reverse Fee & Break-Even Price Calculator
Work backward from your required net dollar profit or target profit margin percentage to mathematically derive the exact selling price to list on any marketplace.
Target Margin & Pricing Solver
Calculate the required listing price across each marketplace to achieve a specific target dollar profit or margin percentage.
How Reverse Pricing and Break-Even Calculation Works
Stop guessing your listing prices. Derive exact break-even thresholds and profit markup guarantees.
1. Break-Even Price (Zero Net Profit)
The break-even price is the exact minimum sale price where you recover 100% of your product acquisition cost, shipping expenses, and all platform transaction cuts without losing money.
2. Target Dollar Profit Mode
Specify an exact net dollar return (e.g., $25.00 net profit). The solver dynamically adjusts for escalating percentage commissions and sales taxes to solve the required list price.
3. Target Profit Margin (%) Mode
Set your target margin percentage (e.g., 30% Net Margin). The algorithm calculates the necessary markup to cover all variable marketplace cuts and fixed processing costs.
4. Multi-Channel Pricing Protection
Because platforms like Poshmark (20%), eBay (13.25%), and Depop (0% fee + 3.3% card) have differing fee structures, reverse pricing lets you set tailored list prices on each channel.
Category Rates & Platform Fee Directories
Exhaustive 2026 fee schedules across eBay, Amazon, Etsy, Mercari, Poshmark, Depop, Shopify, and PayPal.
Direct comparison of baseline commission cuts, payment processing rates, and monthly store/listing requirements.
| Marketplace | Selling Commission | Payment Processing Fee | Listing / Store Cost | Typical Total Cut |
|---|---|---|---|---|
| Depop (US/UK) | 0.0% (Zero Commission) | 3.3% + $0.45 (US) / 2.9% + £0.30 (UK) | $0.00 Free unlimited | ~3.5% - 4.5% |
| Shopify Store | 0.0% (Direct Sale) | 2.9% + $0.30 (Basic Plan) | $39.00 / month | ~2.9% + $0.30 |
| Mercari | 10.0% Flat | $0.00 (0% for sellers) | $0.00 Free unlimited | 10.0% Flat |
| Etsy | 6.5% Transaction | 3.0% + $0.25 (US Payments) | $0.20 per 4-month listing | ~9.8% - 11.5% |
| eBay | 13.25% (Standard) | Included in FVF ($0.30 - $0.40 order fee) | 250 free/mo ($0.35 extra) | ~13.5% - 15.0% |
| Amazon FBM | 15.0% (Category Avg) | Included in referral cut | $39.99/mo (Pro) or $0.99/item | ~15.0% - 17.0% |
| Poshmark | 20.0% ($2.95 under $15) | Included in 20% (0% extra) | $0.00 Free unlimited | 20.0% Flat |
Reverse Calculation & Profit Pricing FAQ 2026
Official 2026 fee schedules, commission matrices, store subscriptions, and margin calculation formulas for multi-channel e-commerce sellers.
Which online selling platform has the lowest fees?
In the US & UK, **Depop** charges 0% seller commission (only 3.3% + $0.45 processing). **Mercari** charges 10% flat commission with 0% seller processing. **eBay** averages 13.25% + $0.40. **Etsy** is ~9.5% + $0.45. **Poshmark** is 20%. For private sellers in the UK, **eBay UK** is the cheapest with 0% selling fees.
Which is cheaper, Etsy or eBay?
For lightweight handmade goods and craft items, Etsy is typically cheaper (~9.5% + $0.45 total fee vs eBay's 13.25% + $0.40). However, Etsy charges a recurring $0.20 fee every 4 months per listing whether it sells or not, whereas eBay offers 250 free monthly auto-renewing listings. For high-volume sellers making over $2,500/month, Shopify (0% commission) is cheaper than both.
Who has more fees, eBay or Poshmark?
Poshmark has higher fees (20% flat on items $15+) compared to eBay (13.25% + $0.40 on apparel). On a $100 clothing sale, Poshmark takes $20.00 in fees, whereas eBay takes approximately $13.65 (saving you $6.35 on eBay).
What is better, Poshmark or Depop?
Depop is significantly better for profit margins (taking only ~3.5% vs Poshmark's 20%) and has a larger audience for Y2K, vintage, streetwear, and Gen-Z aesthetics. Poshmark is better for mid-to-high-end women's contemporary fashion, designer brands, shoes, and bulky coats where buyer-paid 5 lb Priority Mail shipping provides convenience.
Is it cheaper to sell on Mercari or eBay?
Mercari (10% flat) is cheaper than eBay (13.25% + $0.40) on most general merchandise. On a $100 sale, Mercari charges $10.00 total, while eBay charges ~$13.65, saving you $3.65 on Mercari.
Is it better to sell on Mercari or Poshmark?
Mercari is better for general household items, electronics, toys, collectibles, and video games (10% fee vs Poshmark's 20%). Poshmark is better for luxury fashion, shoes, and high-end apparel due to its established fashion buyer community.
how do shopify and etsy fees compare?
Etsy takes ~9.5% + $0.45 per sale (6.5% transaction + 3% processing + $0.20 listing renewal) with no monthly fee. Shopify charges a $39/mo subscription and 2.9% + $0.30 processing with 0% commission. When your shop generates over $2,500/month in gross sales, Shopify is significantly cheaper and gives you full control over customer branding and email marketing.