You should check your state income tax form before you decide if state sales tax would not apply. The Indiana state tax form asks specifically if you purchase an item out of state or through the internet. If you have and answered no, you have falsified a legal document. This may not be bad for an individual, but I deduct all of my tool purchases as business expenses. I prefer not t be charged with tax evasion and fraud, so I just pay the taxes. Only difference between this and when I bought my truck out of state, is I had to pay the sales tax when I registered it and purchased my plates.
Another vote for Tom Bellemare.
Tom