Are you saying... theoretically if stores had to do it too? Because they don't make stores do it for walk-ins. Stores can just charge what their own rate is. But I guess they would have to charge what the person's rate was if they shipped something to them. Which I bet most store owners probably don't even realize.
The definition the state uses is "party that you ship to".
Another wonderful thing they do, is the rule that anything over $200 in sales tax for the year, automatically means you have to do quarterly filings. I've called them up for two years and basically demanded I file at the end of the year. I said I simply don't have time to go through all that for what amounts to a couple hundred dollars a quarter. The limit should be at least $2000 or something. $200 is ridiculous. Some people would have to go through all that four times a year to pay $50? Not surprisingly, the people in their office eventually admitted to me that they think it's stupid too, since it quadruples their work, for very little return in tax proceeds.