Tire rack has them for $88 each plus shipping.
http://www.tirerack.com/
4P175/65R-14 Bridgestone Potenza RE92 XLIn Stock$88.00$352.00
Shipping: $41.62 --This will vary depending upon where you live, but this is off of the Tirerack.com invoice. I just put a set on mine a couple of weeks ago.
I recommend not getting them mounted a pep boys because they wouldn't know a tire from a doughnut.
I also found that getting them mounted at the Toyota dealer was cheaper then getting them mounted at Discount Tire. BTW, if you have a Discount Tire near you, they will match the Tirerack.com pricing. So will many other real tire dealers.
Regardless of what pressure they are set at by the place you get them mounted at, run them at 51/49 or they will have a very short life. Also be sure you get the exact tire as listed above.