Would a 2 layer phone verification order system not stop bots?
It doesn't matter what you do. Bots are making it easier but even if it has to be done manually, there's whole groups of people that will do it manually if needs be and still scalp and buy out all stock ASAP. There's no stopping it. One of the US shops decided the only fair way to deal with it is a raffle and they're trying that now. Simply randomly picking up customers from a pool and letting them buy card for 2h before they lose spot etc. Might be the only sensible option really.