those wheels are replicas. not sure if that really matters to you. the factory wheels are expensive especially from the dealer. where are you located? i have my factory set that i would part with, but not looking to ship them. also if i were to buy a set of the factory ss wheels id get the chrome 08 impala ss version theyre way nicer than the "polished" wheels.

 

Price sounds right for polished, the regular machined are real close to $500 each. Here @ work when we need 2 or more OE rims we look aftermarket because we can usually get a whole set for less $ then 2 OE.