One car, a 1997 Toyota Corolla DX Sedan, sold for $7,795 and had 60,593 miles. Meanwhile, a second 1997 Toyota Corolla CE Sedan cost $5,999 and had 65,429 miles on it.

But it wasn’t without its flaws. Among other things, Kilmer says the car “makes noise” and that “it’s got duct tape” on one of its side-view mirrors. What’s more, he says, the license plate was bolted ...