The Bburago 250 GTO is a pretty bare-bones model. I think it's worth $10, but don't expect alot of detail. The engine is very basic, the tires and wheels are the same size, front and back, and the knock-offs have the usual Bburago hole in the center. The headlights are not too good either. . .
The 250 LM is noticably better and more detailed than the GTO but it should be since it's a newer model. But of course, it's still a Bburago so you can't expect much. But for $10 they're a good buy, if for no other reasons than in my opinion every sports car collection should have some classics like the GTO, and no one else ( except Guiloy ) makes the GTO at a price that is affordable for many of us.