Coinbase offers Bitcoin, Litecoin, Ethereum and Bitcoin Cash.. USING THIS LINK WILL GIVE YOU $12 FREE BITCOIN. Your weekly limit will increase as you hit your buy limits. It starts at $300 and the maximum is $2000. You are able purchase using a credit/debit card with coinbase. Selling coins and withdrawing AUD into Australian bank accounts is not allowed on coinbase, so you would have to transfer your coins to another exchange to withdraw your funds.