I've been looking at cars.com, cargurus and carmax. Carmax seems the most pricey, but they have a lot of cars on their site. Prices are crazy. I see the same year, make, model and similar mileage for one price and then half that price. Of course, both cars are "perfect".
And, yes, I think I've seen some flippers. Even accounting for people using a similar format for placing ads, some have tells that smack of being the same person. The same typos. The same broken attempts at scripting text. Seeing the same things in multiple ad's pictures. And it may not be a bad car, but, yeah, it's kinda sketchy to present it as "your car" when it's a flip car. Just come out say that. I don't care, so long as it's a good car.
And what some people call "restored". Draping the whole interior in cloth from Hobby Lobby, and using a box knife to cut the handle holes, is not a restoration.