I'd imagine they are short on pilots, so the OP is factoring in with extra flying you'll be close to 60K on the BE-99, the -1900 clears 60. APC says 10 round trips per pay period (2 weeks I assume) which equates to flying 20 days per month = 42,700/year for the BE-99? Not rock star money, but considering what these jobs have paid historically I'd say it's a step in the right direction.
If you guys get a base in BOG, PTY, MNL, CEB, or BKK let me know and I'm interested!