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SourceHound is a reseller's research tool. The browser extension overlays an estimated resale value and expected profit on every listing card as you browse Facebook Marketplace, eBay, and ShopGoodwill — so you can spot profitable inventory before anyone else.

How it works
• Browse a marketplace normally — no special workflow
• Every visible listing gets a small badge: 🔥 for great deals, 👍 for maybe, 💩 for skip
• The badge shows expected profit, margin, and the estimated resale value
• Click through to act on the deals you like
• Tap the refresh icon if a seller drops their price while you're on the page
• Your evaluation history syncs back to your sourcehound.ai dashboard for review

Requires a SourceHound account (free trial available at sourcehound.ai). You stay in control — the extension never bids, buys, or messages sellers. It reads listing cards on the three supported marketplaces only, and sends sanitized metadata (title, price, image URL, listing ID) to our evaluation API.

What the extension does NOT do
• Read pages outside Facebook Marketplace, eBay, or ShopGoodwill
• Bid, buy, or message sellers on your behalf
• Bundle third-party trackers, analytics, or affiliate-link rewriting
• Collect data about marketplace sellers (no profiles, no contact info, no PII)

Full privacy policy: https://www.sourcehound.ai/extension-privacy.html

Supported marketplaces
• Facebook Marketplace (you must be signed into Facebook)
• eBay search, browse, and item pages
• ShopGoodwill search, category, and item pages