Certainly with the margin you have you're not making huge profits etc, and I have no problems at all with your business, you're offering a service for people who have difficulty obtaining a product; and I know how hard bitcoins are to get in Aus.
Its bitcoins themselves I am criticizing. One of the reason people would take them up is to avoid huge fees, however in Australia by the time you obtain bitcoins then exchange them for goods or whatever you've paid way more then any fees normally associated with such transactions.
Also funny reading this forum...summary of many post...."hey this bitcoin seems like a great idea, saves using those ripoffs paypal"; followed by "hey where can I buy bitcoins with paypal".........facepalm