Would you be more likely to buy new gear out of state if there was no sales tax

grannyring,
You're from MN right? These laws have existed for a long time. As I said, never heard of anyone paying attention to them.
However, if you purchase a car out of state and want it licensed in MN, you will pay sales tax. Anything that needs a license will be the same.

I try to buy from overseas or Canada as much as I can by mail. Not the audio equipment though, this I buy used here. But if I had to buy an expensive new piece from a dealer I could just ask him to take the price a little lower to cover the tax or I might not even care.

Rja, correct. 

davehrab...
True. I have had to declare "internet" purchases from out of state for as long as I can remember.  And I have.  To the best of my ability.  I do not maintain records of everything I have bought online;  99.5% of what I buy is from within the state I reside in,  and the state gets its due from me.

Except for the clock with the horse in it's stomach....I mean the horse with the clock in it's stomach....  (The Honeymooners)

No.