tirerack.com has tire dealers all over the country as partners. Check their site to see if any are in your area. They will install them for an agreed upon fee.
I buy all my tires at Costco. I know there are cheaper places, but I don't think I'd save that much. Plus, I can get my tires rotated and the nail pulled almost anywhere I go.
As a bonus, they now sell their polish dog and a soda at the tire register so you can pick it up at the food court.
Good thing to have patients. Got my first 2 generals grabbers from ebay for $132 shipped. Just got the second 2 for $128 shipped. All brand new. I have a local place that will mount and balance for $40. Life is good.