call a discount tire close to you and ask them if they have any "blemished" tires in your required sizes...I picked up a set of 275/40/17 a few weeks ago for $300 drive out.
PM me... I think I have a spare set of 275/40/27 KDW with really good amount of tread left like 90 % if your interested I'll check.... $200 if I have them...