For NUS business school program, MBA there might not be schlorship, but if you apply for Msc of PhD in business school, as a full time research student, you will have a scholarship of 1500/month plus tuition fee waived.

While MBA requires GMAT, Msc/Phd requires GRE or GMAT.

Course fee please refer to this webpage
http://www.nus.edu.sg/registrar/graduate/info/fees3yrs.html

Master student may stay in Gillmen Heights, but it is about 20 min to take a bus to school, the fee is ard 300/month for a bed in double room. If you come with your wife, you can apply for GSA for about 700/month. You can stay outside for around 400/month for a single room or around 300/month for a double.

Rounds up all expenditure, it may cost S$7000-9000/year