You can buy widely traded tokens using Australian dollars (AUD) on platforms like Binance Australia or Revolut Australia .
For secure payment processing or banking authorization, you do not "buy" these in a traditional store but rather "order" or "provision" them: Manage your SecurID® token in Online Banking - Westpac where to buy pay token
In many regions, "buying a token" refers to purchasing prepaid power credits for a meter: You can buy widely traded tokens using Australian