You can get better prices at a warehouse club, like Costco, Sam’s, or perhaps even BJ’s. Costco, my preferred place to purchase tires, will be able to beat most retail prices, but they also include mounting, dynamic balancing, a lifetime road hazard warranty, lifetime free rotation, and lifetime free rebalancing. When you take all of these factors into consideration, Costco is cheaper by a significant margin.
Yes, you have to pay a membership fee, but that fee is less than half of the amount that you are likely to save on a set of 4 tires at Costco. Plus, Costco sells batteries (the same as the Sears Diehard, for a lot less money), in addition to all of the other food, automotive, household, and prescription products that they sell at a significant discount to regular retailers.
No, I am not affiliated with Costco in any way. I am just a very satisfied customer of long standing.