This is different from internet sales...your point of sale is in that state and if they collect sales taxes from local sellers sales at those shows it is fair that they collect them from your sales also.Visiting a state for the purpose of selling merchandise which is delivered at the point of sale, has been long established as pseudo nexus, i.e., sales tax must be collected and remitted.
With Internet sales the point of sale is in your home state. Sellers in the other states delivering to your state don't have to collect tax on their sales to residents of your state so the current system is fair.
What we are talking about is making me responsible for collecting taxes in the state of Hawaii, 5000 or so miles away and where I've never been in my life. I think Hawaii should find a better way to make their citizens obey their tax laws.
The point was that we established a presence in 14 states by virtue of attending an art fair in those states. Because of this presence we are already required to remit sales tax on all sales to these state, including internet sales, and our sales are nowhere near $1,000,000. It is a inconvenience to comply, but it is the law and we do comply.
Much of what has been said about remitting sales tax to all states is exaggerated. I know, we already remit in 14 states. There are several options for software systems that automate the process. I sell one of them.