Many states have BOTH income AND sales tax.
I've always been surprised at how many people have no idea how much... or even what percent of there income go's to what... particularly to taxes. Fact is... if you build frames you pay taxes... if you have employees you pay-out all kinds of taxes. Many of the taxes you pay are even hidden in items and services you require.... like phone bills, and electric. Half the cost of building a bicycle frame... could be merely the cost of the taxes paid in making the frame.
If you buy used.... you can often avoid the tax.