Ecommerce Profit Engine

Marketplace Profit Calculator: Model selling costs, marketplace fees and operating expenses across Amazon, Shopify, Etsy, eBay and TikTok Shop.

Marketplace Profit Analysis

Ecomly Profit

Compare marketplace fees, operating costs and profitability using a consistent model, with break-even pricing calculated from the costs you enter.

Marketplace & market

Marketplace

Market

Marketplace fees and rules can vary by country, category and seller program. This version uses United States marketplace assumptions; always verify current official fees before making a commercial decision.

Common economics

Product price ($)

Customer-paid shipping ($)

Sales tax collected ($)

Seller discount ($)

Platform-funded discount ($)

Orders / month

COGS / order ($)

Inbound / packaging ($)

Seller-paid shipping / label ($)

Fulfillment / 3PL ($)

Other operating cost / order ($)

Return / refund rate (%)

Return handling / returned order ($)

Amazon fee model

Amazon

Profitability

Profit / order

$0.00

Net margin

0.0%

Monthly profit

$0.00

Exact break-even price

$0.00

Max additional ad spend / order

$0.00

Fee & cost waterfall

Amazon methodology

Marketplace model checks

Built-in checks help verify consistent calculations across all five marketplace models.

Planning estimate

Calculator outputs depend on the assumptions entered and may differ from actual marketplace statements, taxes, refunds, advertising results and seller-specific terms. Verify current official seller documentation before making a commercial decision.