what are these wheels worth?

Hey guys,

I'm going to sell my spare set of wheels and tires. I'm wondering what price I should be asking for these. I'm selling the wheels, tires and nuts (including 4 locking nuts plus the key). They are in good shape except for one that has some discoloration shown in pic#2. Two of the tires probably should be replaced soon and the other two don't match (manufacturer) but are in good shape - I'd guess 80% tread left?. I think they are 225/50-15. Anyway here are links to my pics and thanks a lot for any help!!

http://www.utdallas.edu/~perdue/wheels1.jpg

http://www.utdallas.edu/~perdue/wheels2.jpg

http://www.utdallas.edu/~perdue/wheels3.jpg

http://www.utdallas.edu/~perdue/wheels4.jpg

http://www.utdallas.edu/~perdue/wheels5.jpg

http://www.utdallas.edu/~perdue/wheels6.jpg

Michael