They do not sell their products through "brick and mortar" stores. They do have some "authorized distributors" but I find ordering on line easier, quicker and cheaper, especially with their FLAT RATE shipping. So I combine several of my Corvette buddies orders with mine thus lowering individual shipping to about $2.
Just order on line, you'll have your order usually with 2 days.
BTW I've used ZAINO for over 10 years now.