If you've been to Radio Shack recently, they have a decent number of Arduino kits and the like.. however I don't think people are not dense enough to pay $60 for a kit you can purchase for $20 on Amazon. I think their was a point where they could have course corrected though I think they missed the exit half a decade ago.
I bet they'd pay 10 bucks an hour for shop time with access to tools and advice, and buy arduinos at a slight premium out of impatience to get projects done.
True they have a weak supply of Arduino stuff. Since its mostly open hardware they could probably source low cost kits instead of trying to gouge customers. I've been there recently and it took me all of 2 minutes to look through their entire inventory... Imagine an entire wall of different modules, sensors, servos, etc etc... that would get me in the store!