This gets somewhat complicated quickly.
I see all the points and I understand everything everyone is saying, I'm just not certain where my legal duty starts and ends. And whether or not I'm willing to take the additional burden so I can probably sell a hundred dollars worth of magic cards a year (maybe more I dunno)
As for the state online tax, I consider that a voluntary tax because states have not been allowed to enforce taxation over the internet in general for a while, only if distribution centers are in your state. Like for instance I pay VA state tax on Amazon purchases because as part of the deal for VA to allow them to build distribution centers here (yup they begged the state since DC and its environs are a gold mine) was for them to charge state tax through the website. that is the only type of way that states can currently tax you for your internet purchases (doesn't mean they aren't trying to change it lol) so I say screw you every time I see that little box.