Now that I think about it once you move to AZ you're paying sales tax again. Do they collect there for all orders or is it like CA where the company needs a physical address in the state?
I can just have everything sent to my mom in Portland (the big stuff at least) and she'll forward it onto me. She works for a job that does massive amounts of shipping, so she can ship just about anything via UPS for me for free.
Then I can avoid sales tax too