Hello! My concept is simple, bright, colorful and eye catching and with entries
#1 and
#2, the idea is to make the 'AZ' the focus, because you are saying you have everything 'from A to Z' -- I am not sure if that idea works in your country, but I'd thought I'd give it a try. :-)
(Amazon.com has the same idea with the arrow underneath pointing from the A to the Z.)