I found some!
I ordered them and will pick them up Friday afternoon...they were $43 a piece. Not too bad! He also said they'd throw away my old tires for me too.
So I'm going to take the two that are still on their rims and have them take them off and discard the tires, then I'll have to bring them home and get them ready for tires too.
Outstanding! Great that he'll take your old ones, too, so you don't have to fool with that.