I checked these wheels out in person yesterday and they are very clean. The rash is hardly noticeable and through experience I've seen much worse repaired for under <$300.
These are indeed OEM BMW competition wheels and have the BBS stamp behind the face. I would've bought them, but after a test for on my E60 they just did not look right on such a big car.
The seller was fantastic and understanding in that I was very particular about the look of my car. I would recommend this guy and his wheels to anyone, go see them in person and you'll be surprised.