I bought a car on Beepi, and it was a great experience, much better than buying a used car from a traditional dealership or a private party (e.g., Craigslist). One thing that struck me as particularly crazy, though, is that they allowed you to charge your entire purchase to a credit card! That was great for me, since I got a ton of credit card points out of it, but it didn't seem very sustainable, and I guess it wasn't.

Shift (one of their competitors) also seemed quite nice, but they didn't allow you to charge your car to a credit card, so that was one factor in my decision to choose Beepi instead.