I purchase it for all of my tires and yes I pay the same price you pay for it. I have had to use it twice in the last 3 years due to some construction work near my office.
When buying a warranty you want to make sure you check to see if it is a prorated warranty or a non prorated warranty, which BTW the prorated road hazard warranty is FREE when you purchase your tires in-store at Discount Tire or America's tire locations.
A lot of companies only sell a prorated warranty and if you damage a tire that can not be repaired you end up paying a prorated price for the new tire. We sell our Certificates for FREE replacement that are a non prorated warranty. If you damage a tire while driving and it can not be fixed and it still has at least 3/32nds of tread left on it, we will replace it for you for FREE. One unrepairable tire and this warranty pays for itself.