For your application, it looks like the range is:
$151.99 - $212.99 per tire
Price includes:
Shipping & Handling, Mounting, Balancing, Lifetime Services, Nitrogen Inflation, New Rubber Valve Stem, Environmental Tire Disposal, and the Costco Road Hazard Warranty.
I have a set of the Michelin - LTX® M/S's and they are still in great shape after 65K miles. I have had them rotated and balanced about every 5-10K miles and it's free. I know nitrogen is taboo but that's what I have in mine and what Costco uses.
I had one tire go flat and I aired it up and took the truck in and they gave me a credit for the tread I had against a replacement (new)... I had only used 2/32 on tread so I ended up paying like $35 for a new tire installed.
Costco has great customer service and after you buy the set, you won't have to worry about them until they need replaced.