Like gwhitf said, indonesia is pretty infamous for all sorts of fraud and scams, so at least be very careful dealing with them.
Yes, unfortunately, we are famous for that. I live in Jakarta, Indonesia. Actually, if you find a deal that are too good to be true in ANY part of the world, you should be careful.
The person that is in charge of the Hassy products at OKTAGON is Mr. EKO. As a matter of fact, I just did a comparison of my PhaseOne P25+ mounted on a PhaseOne Camera, along with Aptus 22M (forgot the type) mounted on a H1 , and also a H3DII-39. Some interesting result indeed from the test.