I agree you have to be patient... and careful when buying used, but I have sold a set of excellent used tires + steelies myself, so I know buyers can get a good deal. I may even have a set of BMW OEM sport package alloys (my winter set) to sell next year... I take excellent care of my cars, my alloys never have curb rash, my neighours want to buy my cars... so whoever will buy them will get a good deal compared to new, even if they won't be cheap.
I'm glad what you bought fit slybry. Now I hope you enjoy. 
Julie, I'd be interested in those OEM sport pkg alloys for either snows or track wheels for my car.
Just saw this message now GD. I would only selling them after this winter (I will be deciding what to do with the coupe early next year, so want to wait before selling these) - would you still be interested then?
Some info: they are the OEM 17" wheels from the 328i sedan with sport package. Except I did not get a staggered set-up, but rather 2 pairs of front wheels (as recommended by the dealer). They are fitted with top-rated performance winter tires, Blizzak LM-25. The set was put together by dealer (I just told them the wheels I wanted and the tires I wanted).
I loved the way they look on the sedan, so I bought them. But they don't look as good on the coupe I find... doesn't seem to go with their shape as well.
They're currently wrapped in their winter totes, but here's some quick picks of the model I grabbed off the web. I would photograph mine them in detail after they've been dismounted and washed after this winter. Their condition is currently flawless, but I would also examine and re-state their condition when I'm ready to sell.