mazda rims, is this true?

I found this site when i was looking at rims. Its called www.discountedwheelwarehouse.com Anyways i'm looking at rims on there page just for the hell of it. They have a little section where you can type in your vehicle and so on. I thought i'd try it out just to see the slim picking of rims i can choose. Well to my surprise, they dam near had every rim. Atleast the ones i wanted, but it can't be true. If they have the rims, then everyone else must be able to get them to right? Like the KMC Stealth or Elite Barb, they dont make those for mazda's, do they?