DeaLynx: Price history & real-deal alerts for French online stores

Hey Product Hunt 👋 I'm Mathieu, the maker of DeaLynx. Like a lot of people, I kept getting burned online: buying something only to watch it drop 30% two weeks later, or seeing a "-50%" banner on a price that had quietly been inflated first. Keepa solved this beautifully… but only for Amazon. Everywhere else in France — Fnac, Cdiscount, Darty, Leboncoin — I was flying blind. So I built DeaLynx: price & stock tracking across French e-commerce, not just one marketplace. - 📈 Real price history on any product, so you can see if today's "deal" is actually a deal - 🧠 A deal verdict at a glance (good price vs. inflated) based on the real curve - 🔔 Alerts when a price drops or an item is back in stock - 🧩 A browser extension (Keepa-style) that shows the history right on the product page while you shop - 🔎 You can even track a whole search/listing, not just a single product What changed the most during the build: I started Amazon-only, but quickly realized the real pain in France is the fragmentation across dozens of shops. That pushed me toward a hybrid scraping approach and a crowdsourced extension — each user browsing naturally helps keep prices fresh for everyone. It's freemium, and today's launch is really about getting honest feedback from people who shop online a lot. What would make you actually trust a "good deal" badge? I'm reading every comment 🙏 Try it → https://dealynx.fr Chrome extension → https://chromewebstore.google.co...