[Roscoe]

Anthropics are based in London so if you're in the UK too a postal order would suffice I would imagine. Failing that, if you're not in the UK you could ask for Anthropics banking details, BSB, Account #, Account name etc and do a bank to bank transfer.
If your friend did the purchase for you both he/she and you would have access to the token with which to activate the software for only one payment !