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Direct Community Line • Response Time: Within 24-48 Business Hours

Have a question about marketplace fee calculations? Spotted a 2026 fee revision on Amazon, eBay, or Mercari before we updated our algorithms? Want to suggest a new feature or bulk tool integration? We would love to hear from you.

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FlipPnL FlipPnL™

Free, lightweight profit-and-loss, fee breakdown, and break-even liquidation floor calculator built for e-commerce resellers.

Reseller Tools

  • Fee Calculator
  • Sourcing Log
  • Income Planner
  • Deal Calendar

Educational Guides

  • 2026 eBay Fee Guide
  • 2026 Amazon FBA Guide
  • 2026 Reseller Shipping Guide
  • Financial Knowledge Hub

Company & Legal

  • About Founder
  • Contact & Support
  • Instagram (@FlipPnL)
  • Privacy Policy
  • Terms of Service

Legal & Financial Disclaimer: FlipPnL™ is an informational estimating tool designed solely for mathematical modeling and educational purposes. FlipPnL™ does not provide certified financial, accounting, legal, or tax advice. Actual marketplace fees, processing surcharges, and tax liabilities depend on individual seller status, nexus, and regional tax codes. Always consult a licensed Certified Public Accountant (CPA) or tax attorney for professional guidance.

© 2026 FlipPnL™ (flippnl.com). FlipPnL™ is a proprietary trademark. All rights reserved. Amazon, eBay, Mercari, Poshmark, and USPS are registered trademarks of their respective owners. FlipPnL™ is an independent calculating utility and is not affiliated with, endorsed by, or sponsored by Amazon.com, Inc., eBay Inc., Mercari, Inc., or the United States Postal Service.