btw what would be the reason to buy of qantas website when you can get a travel agent to do it for you without the huge cc fee esp with price match = no CC fee. (under normal circumstances, not voucher related)
To get it charged to the Qantas merchant account and get the extra points from a number of credit cards (EDR MC, Earth, ANZ FF Visa/AMEX). If it goes on the travel agent's merchant account you won't get that. If the travel agent put it through the Qantas merchant account (which they can do), you get hit with the fees anyway to my knowledge.