Hey Product Hunt, We build price monitoring infrastructure, and the thing that kept biting our customers wasn't collecting prices. It was comparing the wrong two things. You check your product against a competitor's. You price off the gap. Except one page was a 500ml and the other was a 750ml. Or a bundle vs a single. Or last year's model with the same name. The number was real. The comparison wasn't. Every free price checker out there compares whatever two URLs you hand it. None of them check whether it's the same product first. So we built one that does — it pulls brand, SKU and title from both pages and returns a High / Medium / Low confidence score. If it can't confirm it's the same product, it tells you, instead of handing you a number that means nothing. The build itself went sideways in a way I didn't expect. It worked perfectly on my laptop and got blocked constantly in production — same code, same headers. Turned out the shops weren't rejecting our requests, they were rejecting our data centre. My first instinct was to make the requests look more like a browser. That was wasted work: I compared the responses byte for byte and they were identical, because the filtering was happening on the IP and the TLS fingerprint, which no header can change. The fix was routing through residential IPs — and the surprise there was that the cheapest tier worked and the expensive rendering tiers didn't. The thing that mattered was forwarding headers correctly, not paying for a browser. Spent real money learning that. No signup, no email, no gate. Paste two URLs, get an answer in about 20 seconds. Would genuinely like to hear where it breaks. Weird marketplace URLs and regional sites are where I expect it to struggle.

Free-competitor-price-checker

Free competitor price checker — are you priced right?

Free competitor price checker — are you priced right?