from tirerack.com, call and ask for Luke. I just ordered a set of SSR Integral wheels and Bridgestone potenza s-03's for $2100 shpped. These are forged 18" wheels that only weigh 18 lbs! Pretty decent bang for the buck.
18" Enkei RPO1s with tire will be in your price range. I think tirerack or discounttire sells those. Also suprastore has then for 1k without tires. I would call dusty and talk to him...he always gives good prices and service