Once you have purchased Bitcoin in Australia, you can use the digital currency to make payments at several vendors that include cafes, bookstores, and fruit and grocery suppliers. Of course, one can use Bitcoin as an investment vehicle or as a means of peer-to-peer payment as well. If you purchase with cash, your coins are delivered within an hour. While buying crypto with a credit or debit card is generally quick and easy, it can also be quite expensive. Ease of Use. While we are independent, the offers that appear on this site are from companies from which finder. Buy Bitcoin in Australia.