XP
LV 1 0 / 100 XP
FREE TOOL v0.1

Know your real profit
before you sell.

Calculate fees, costs & margins across every major marketplace.

Net Profit
$0.00
Margin: -
Your Numbers
$
$
$
$
Offsite Ads (Etsy 15%)
Platform Fees Applied
Profit Breakdown
Net Profit per Sale
$0.00
Margin: -
Break-even price: -
Costs & Fees Profit
Fee rates updated March 2026
Results are estimates - verify with official platform documentation.

HelpSeller - Free tools for marketplace sellers
FREE TOOL v0.1

HelpSeller

A free profit calculator for marketplace sellers. Know your real margins before you list - across Etsy, Amazon, eBay, Redbubble, and Gumroad.

Built by a seller, for sellers. No signup required to calculate. Enter your numbers, see your profit instantly.

More tools coming soon - helpseller.com

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Seller Tips

Pricing Strategy

Use the 3x rule: Your sale price should be at least 3x your material cost. This gives you room to cover fees, time, and still make a profit.

Platform Fees

Etsy charges more than you think. Between listing, transaction, and payment processing fees, expect to lose 10-15% of every sale before shipping.

Shipping Costs

Never absorb shipping blindly. Calculate your average shipping cost per order and bake it into your price or offer "free shipping" only when it already works.

Ad Spend ROI

Track ROAS before scaling ads. If your net profit goes negative with ads enabled, your price needs to go up - not your budget.

Margin vs Markup

Margin is profit / price. Markup is profit / cost. A 50% markup is only a 33% margin. Know which one you're using to avoid underpricing.

Gumroad & Digital

Digital products have near-zero COGS. Focus on maximizing volume. Even a 60% margin on a $5 product adds up fast at scale.