Well, I got mine from 1010tires.com, they're $179.99 for the 205/50/16 (about $810 shipped, taxes included), but not mounted.
I paid a grand for my 235/40/17 ES100's.
Search around locally, you might be able to get a pretty good deal.
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."