English Français العربية

Reseller True-Profit & Fee Calculator

Official registry E-commerce

True net profit and breakeven price for eBay, Etsy, Poshmark, Mercari, Depop, Whatnot, TikTok Shop.

Source code Documentation

What can you do with Reseller True-Profit & Fee Calculator?

  • calculate_net_profit: every fee line, net profit, margin, ROI, what you keep.
  • compare_platforms: the same item on all seven, ranked by net profit.
  • find_breakeven_price: the lowest list price that reaches your target profit.
  • get_fee_schedule: the schedule used, with the date and official page to verify.

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http reseller-true-profit-fee-calculator 'https://reseller-fees-mcp.mcpize.run/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "reseller-true-profit-fee-calculator": {
            "type": "http",
            "url": "https://reseller-fees-mcp.mcpize.run/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Reseller True-Profit & Fee Calculator
  2. What did that sale actually make you?
  3. Platforms and fees covered (US, as of 2026-10-01)
  4. Tools
  5. Use it

Reseller True-Profit & Fee Calculator

True net profit for resellers across eBay, Etsy, Poshmark, Mercari, Depop, Whatnot and TikTok Shop. Every fee itemised from current 2026 schedules, plus platform comparison and the minimum price that hits your target profit.

What did that sale actually make you?

Sale price is not profit. Each marketplace stacks different fees, and they changed a lot in 2026. This itemises every one, then subtracts shipping, what you paid for the item and supplies.

Platforms and fees covered (US, as of 2026-10-01)

  • eBay: final value fee by category tier (standard, sports cards, handbags, watches, athletic shoes), per-order fee, Promoted Listings.
  • Etsy: listing fee, 6.5% transaction, payment processing, Offsite Ads (15% or 12%).
  • Poshmark: flat fee under $15, 20% above.
  • Mercari: 10% selling fee.
  • Depop: no US selling fee, payment processing, boosted listings.
  • Whatnot: category commission plus payment processing.
  • TikTok Shop: referral fee (8% for most categories since Aug 2026), per-order fee, affiliate commission.

Tools

  • calculate_net_profit: every fee line, net profit, margin, ROI, what you keep.
  • compare_platforms: the same item on all seven, ranked by net profit.
  • find_breakeven_price: the lowest list price that reaches your target profit.
  • get_fee_schedule: the schedule used, with the date and official page to verify.

Fees change often. Every result carries its as-of date, and you can pass custom_fee_pct or custom_flat_fee to adjust for anything that has changed or applies to your account. Sales tax and income tax are not included.

Use it

Hosted on MCPize with a free tier (10 calls a day). Remote MCP endpoint (streamable HTTP, API key from MCPize):

https://reseller-fees-mcp.mcpize.run/mcp

Or run it yourself:

npm install
node server.js   # listens on :8080, MCP at /mcp

MIT licensed.

Frequently asked questions

What is Reseller True-Profit & Fee Calculator?

True net profit and breakeven price for eBay, Etsy, Poshmark, Mercari, Depop, Whatnot, TikTok Shop.

How do I install Reseller True-Profit & Fee Calculator?

It runs as a remote server. In Claude Code: claude mcp add --transport http reseller-true-profit-fee-calculator 'https://reseller-fees-mcp.mcpize.run/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Reseller True-Profit & Fee Calculator need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Reseller True-Profit & Fee Calculator open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Reseller True-Profit & Fee Calculator?

It is published by tylerscomic-lab. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.