Tire market and type of tire will dictate the pricing. Most of your tire shops around here will have a Drag radial/ET Street more than a race shop or Internet warehouse as they don't normally deal with drag cars or wheels.

My drag radials and tires like that always costed alot when I worked for merchants. I sold them for the right price. Just like most other shops, they get them from the wharehouse. They order them from the wharehouse and then sell them for their own price