Stop overpaying at the dealership. Differ-X is a transparent search engine that lets you compare wholesale and private car listings side-by-side. Instantly see how a vehicle's listed price stacks up against its true market value so you know exactly what kind of deal you are getting. Find your perfect match, unlock the seller's details, and buy with confidence.

Hey Product Hunt! 👋 This is my very first time launching here, and I am incredibly excited to finally share this with the community. My website is already live—so I am a bit late officially launching—but I've been heads-down building and making sure it works. As a car enthusiast, I've always found car shopping to be a stressful experience, especially when trying to figure out if a listed price is fair or if you are getting ripped off. I built Differ-X to fix that for both sides of the market. On the consumer side, it is a straightforward search engine with a built-in car appraisal tool. It lets buyers compare live vehicle listings side-by-side against their true market value, so you have the exact appraisal data right in front of you before you buy. On the B2B side, I also built a dedicated Dealer Portal. This is where local dealerships can log in to access and source from aggregated private listings, helping them find fresh inventory without the usual friction. My hope is that it gives buyers more transparency and peace of mind, while giving dealers a smarter way to source cars. I would be incredibly grateful for any feedback from this community on the UI, the appraisal features, or anything else I can improve. Thank you so much for checking it out!

Love how the side-by-side pricing layout keeps the dealer markup and fair market value visible at a glance, it's a small UX choice that saves you from doing mental math while negotiating.

Finally found a side-by-side that actually shows dealer markup against market value, that part sold me on it within a few clicks.

Love how the side-by-side pricing layout keeps the dealer markup and fair market value visible at a glance, it's a small UX choice that saves you from doing mental math while negotiating.

Finally found a side-by-side that actually shows dealer markup against market value, that part sold me on it within a few clicks.

Differ-X

Compare cars side-by-side: listed vs market value

Compare cars side-by-side: listed vs market value