Spoke with my bank today about what they had to offer.
They can supply a bank draft in US dollars payable to PBR for $21 - that's pretty cool and I will be going that path.
That's the most viable method. An WUMO costs $8.65 + Registered envelope = $12 - So $21 is more than fair - and no risks of a lost envelope.
What Bank are you with Tony ?