Exactly what I've just done only in Bangkok, paid 14,000 handed passport, 3 photos and bankbook over no need to go to immigration, was in there office 10 minutes, il go back in a week and collect everything.
I only stay here a year at a time then back UK for work could <deleted> the 800,000 no problem if I wanted, but there's a situation where a visa agent comes up trumps..