Free Tools

Free Reseller Calculators & Marketplace Listing Analyzer

Compare fees and profit across popular selling platforms, or paste a Facebook Marketplace link for a quick AI-assisted review. Free tools, no signup required.

Facebook Marketplace Listing Analyzer

Paste any Facebook Marketplace URL to get instant AI-powered analysis, fair market valuation, deal scoring, red flags detection, and negotiation tips.

AI Valuation Deal Scoring Red Flags Negotiation Tips

Fee Calculators

eBay Fee Calculator

Calculate your eBay seller fees and net profit

Mercari Fee Calculator

Calculate your Mercari seller fees and net profit instantly

Poshmark Fee Calculator

Calculate your Poshmark commission and net earnings

Facebook Marketplace Shipping Calculator

Calculate shipping fees and seller costs for Facebook Marketplace

Facebook Marketplace

Flip Profit Calculator

Calculate your reselling profit, margin, and ROI instantly

PayPal Fee Calculator

Calculate PayPal Goods & Services fees and your net payment

Cross-Listing Profit Calculator

Compare your profit across multiple selling platforms

Other free tools & references

Negotiation Script Generator

Turn an asking price and a list of flaws into a message you can send

Facebook Marketplace

Seller Fee Reference

Current fee rates across every major platform, with a last-verified date

Scoring Methodology

The exact weights, score bands, and limits behind every DealFlipAI score

Take Your Flipping to the Next Level

DealFlipAI scans Facebook Marketplace to find underpriced items you can flip for profit. AI-powered valuations, scam detection, and more.

Try DealFlipAI Free

AI-Powered Deal Scanning

Fair Market Valuations

Scam Detection