I need $50 in USD for a VOA in Vietnam.
What's the best way to buy $50 USD in Australia? It seems like most places have a minimum purchase of $500 or have ridiculous fees. I could always buy $500 worth and then convert back once over there but would like to avoid the double dipping conversion rates.
You're better off getting an E-visa..
Depending where you are in Vietnam their rates are actually better than interbank rates…