Discount Tire Direct's EBay store is currently running a $100 off of every purchase over $400. Even if you have to pay the butt-hurt installation price due to purchasing elsewhere this may work for you. The link is to Hankooks but this is not brand specific and other brands also have a mail-in rebate in addition to the $100 code.
http://m.ebay.com/itm/4-NEW-P245-65...-65R-R17-TIRES-19480-/361105761541?nav=SEARCH
http://m.ebay.com/itm/4-NEW-P245-65...-65R-R17-TIRES-19480-/361105761541?nav=SEARCH