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Is this car overpriced? Find out instantly. STOP OVERPAYING FOR USED CARS Car Deal Check drops a small AI widget onto Craigslist, Autotrader and Facebook Marketplace. Click “Analyze Price” and, in under 2 seconds, you’ll see: • VERDICT — FAIR, OVERPRICED or UNDERPRICED • EXACT % above / below today’s market median • 3 NEGOTIATION LINES you can paste to the seller First 3 checks are free. After that, a 10-pack costs less than $1 per report. ──────────────────────── HOW IT WORKS ──────────────────────── 1 Automatically detects VIN and price on the page (no copy-paste). 2 Fetches live market comps for the same year, trim and mileage. 3 OpenAI GPT-4o mini turns raw numbers into plain-English advice. ──────────────────────── SUPPORTED SITES (v1.0) ──────────────────────── • craigslist.org (all regions) • autotrader.com • cars.com • bringatrailer.com (beta) • facebook.com/marketplace (desktop beta) ──────────────────────── FREE VS PAID ──────────────────────── FREE TRIAL – 3 full valuations, no card required. 10-PACK $9 – 10 credits, never expire. UNLIMITED $39 / month – unlimited checks + upcoming price-drop alerts. Secure checkout handled by Stripe. ──────────────────────── PERMISSIONS EXPLAINED ──────────────────────── activeTab – read the listing HTML you’re viewing storage – save anonymous user ID & free-check counter Host sites – run only on the car-listing domains above https://car-deal-check.com/* – call our valuation API No ads, no personal data collected. Privacy policy: https://car-deal-check.com/privacy ──────────────────────── WHY BUYERS LOVE IT ──────────────────────── • Average users avoid overpaying by $2 100 • One-click insight instead of hours on price guides • Negotiation lines written for you by AI • Works on any desktop browser running Chrome extensions ──────────────────────── ROADMAP ──────────────────────── • Safari and Edge versions • Trade-in valuation • Email alerts when a watched VIN drops in price Never guess a car’s real value again. Install Car Deal Check today and buy with confidence!