Can't find and tire shops in my area that have the AZ850, and none that I know of that will fit tires you bring in.
Edit: Ken Towery's will fit and balance them for $90 , plus $90 for wheel alignment.
BTW, the KT person I spoke to tried to talk me out of trying the Atturo tires - said the ride would be vastly different, ........ sounded like sales talk more than anything else.
I doubt you will find these tires in a shop near by, especially in the 21" size. And yes, it surely sounds like the dude was just trying to get you to purchase from his shop, and probably hasn't even seen an Atturo tire in person, let alone drive on them. And the ride is nearly the same as the Pirellis, actually a bit less harsh than the p-zeros IMO, probably a result of the slightly softer compound and deeper tread depth on the AZ850s.