Cheap source for new or used tires?
 

I recently purchased (from Ebay for $390.00) some 17x7.5 oem F-150/Expedition "buzzsaw" directional rims that were triple chrome plated. I picked them up while on vaction and saved $86.00 in shipping cost. I need some 275/55/17 tires to go with these rims.

I wanted Sport truck Perilli Scorpion 275/55/17s. New Price from the Tire rack and Victoria Tire is the cheapest I have found, but still way out of my price range ($560.00 + shipping).

Therefore, does anybody know a source of new or good used sport truck 275/55/17s tires?

Thanks.