It was on
www.rennlist.com
If you want 7" all the way around chances are you will not find anyone selling some unless they came of a bug that someone bought out-right 4 new wheels. Or you can look at classified ads and sometimes people are selling just a pair of rims instead of a set. A lot of times on Pelican Parts you can find some people that can sell you 1, 2, 3, or 4 rims in any size or style you want (USED).
Look at alot of salvage yard sites. I have 2 favorite sites that I look at a lot. One is in my State and one is in a neighboring state. Most late model salvage yards will give you very good prices on used parts. On site Ifound over 8 Mazda RX-& oil coolers for under $50. If you know anything about these coolers they range from $400-$700 new.
It might seem like a pain in the A$$ but be persistant in your search and have your cash ready.
I have found a chromed set of Mazada Millinia (sp) 17's w/ tires for $500 plus shippng. It is all about finding the right deal_ or fork over the cash and buy four brand new rims of what you want (not a smart move when it comes to buying factory wheels from a dealer)