In Reply to: Yes I think I will go posted by Janbee on Friday, 25. May 2012 at 21:26 Bali Time:
If you want to make things easy for your son the simplest thing to do is to pay in AUD - $30 will cover it with some small change given to him.
Why muck about buying US$ when it's more of a hassle & totally unnecessary? I always pay in AUD - easy peasy.