I just found one agency introduced by the賓賓. The agency is in central and charge me $3,278. This is the cheapest one. The price includes air-ticket (she needs to go back to philipine first since I need her starting from Sep11), body check, both side immigration. No additional charge to the helper and not include insurance. The phone number is 2530-0449 or 2530-0844. You can call them to have a try.