You don't have to charge sales tax to people ordering out of state-- as long as you're shipping it out of state.....
Now---- are they supposed to pay sales tax on such items? Yes -- to their own state--- but no one really does..... They have area on state tax forms to pay such taxes..... but like I said most people just don't do it.
Here in Michigan a bunch of people got into big trouble for buying smokes online and not paying the $2.00 a pack state taxes---- the state tracked them down and made them pay up --- some people owed thousands of dollars.....
I doubt most states come after folks for the basic sales tax ---- we'll see this change in the years to come where we all have to pay tax for everything bought online....