I'll have to look at the rates....maybe a bit more, but again I'm not trying to make a profit here. Just cover my costs.
If I were to guess I'd say maybe $5-10 more, but that would be standard mail. No overnight or anything. I've never shipped to Brunei, so I cannot say how much it woudl be, but the package will be quite small and light (I'm thinking it will likely be in a simpe padded envelope).
It's going to be 4-6 weeks before the order is ready to ship from the factory anyways. Figure a few more weeks before it got back to your side of the planet.