You are not actually required to accept legal tender for anything besides debts. If the transaction is simultaneous, you are not required to accept legal tender

You are not actually required to accept legal tender for anything besides debts. If the transaction is simultaneous, you are not required to accept legal tender (at least in the US.) This is why stores don't have to accept cash and be card only. Edit: I am speaking about the US, unsure how this generalizes everywhere.