Indonesia's House of Representative's members

Several honorable member of Indonesian parliaments just got back from Sounth Korea, they went, as per the house spokesman said, to observe progress of Pertamina's new tanker's building.

In so doing their noble task (watching how public fund is spent by the state's company), the MPs were accompanied by their loving spouses. Understandable; that will close slightest opportunity from stinky parties to distract the MPs with, for example,
opposite sexes lure.

How much is the tanker's worth? millions of US dollars, so the members of parliament were supposed to sleeve up and scrutinize the process to safeguard that huge amount of public money.
How much does the visit cost? 150 million rupiah (or around 15.000 USD).

150 million rupiah for 4 days journey; Day one: arrival in Hongkong at day time, free program, short presentation, day two: free morning, depart to South Korea, arrive at night, day three: 30 minutes presentation by dockyard and consultant, free afternoon, prepare to fly back to Jakarta, Day four: arrival in Jakarta.

150 million rupiah....of course it is much lower than the budgeted 500 million for the visit, but 30 minutes of presentation and short explanation? Somebody please enlighten me with something!