Discount Tire has always matched and sometimes beaten Costco sale prices. Worth a look if DT is closer or Costco is out of stock. Plus the free rotations and air pressure at DT are a lot easier and faster than Costco.
Maybe, but it's more fun to look at the new electronics, eat their snacks (they're back) and enjoy a walk around the store to buy something while waiting. The wine selection should take at least 10 minutes.