Tire life is dependent on many things including the vehicle weight, how aggressively it is driven, inflation & alignment, abrasiveness of the local road aggregate, and other factors.
I'm also not a Goodyear fan. You can search on tirerack.com for your size and see many very good tires in the $150 range. Check the selection box for Low Rolling Resistance tires only and you'll find some that may give better gas mileage. You can check the selection box for a sort by the reviewers' average rating and find some with better than average tread life. The Continental CrossContact LX20 look interesting, and someone here might have info on them.