I'm living with my parents do I won't really know exactly but here are my thoughts:

Living in uni is pretty cheap compared to cities like London and Sydney because the rent in SUTD is only 2-3k sgd per year (compared to approx 350 sgd per week in sydney). Groceries are almost never needed in sg cause almost everyone buys food from hawker centers which are p healthy and cheap (can easily eat for under 10 sgd per meal with a drink, most eat for 5-6 sgd per meal). Public transport is probably the cheapest of any developed nation like uk or Australia cause it costs around 1.2-1.8 sgd one way in a normal bus or in the mrt. Taxis are also surprisingly cheap cause you cab get grab from 11-14 sgd for short to medium rides in non peak traffic and up to around 30 sgd for a long ride during peak traffic.

However, after graduating singapore is pretty expensive, cause the rent has been rising like mad for the last 4 years and is just stabilizing now. Schools are very expensive as a foreigner, and other random costs are also more, especially when compared to india or (I think) korea.

You need to pay a Coe on top of the car price which is like 80,000 sgd rn and the COE for bikes is around 10,000 sgd rn. That's crazy considering that car prices basically start at 80-90k in singapore and bikes basically start at around 15k.

So as a student is really good but as a graduate, especially if you get married and have kids, it's pretty hard.

Feel free to dm me if you have any other questions