I looked on AM, Tire Rack, carID, and discount tire direct. Have bought wheels from AM and Discount Tire before. I had to send the AM brand wheels back, some had paint defects and some weren't true. After that I was looking on AM for a higher quality brand, and settled on Vossen in a discontinued finish but couldn't tell if they actually had them in stock. There were a few other places that oddly enough said they had the same number in stock, definitely holds up the drop ship notion. Eventually contacted Vossen's US team about it and they hooked me up with a place in LA that could do the finish I wanted.
You could also look for wheel shops in your area, I had one that carried a whole bunch of brands I'd never even heard of