Die lah like this.....
I need two connecting buses (Marine Parade => Eunos and
Clementi => Kent Ridge) and one long MRT ride (Eunos =>
Clementi) to school each day. Long and expensive trip.
In short.... I take a total of four bus trips and two MRT rides
on a normal school day. And I haven't even considered things like
weekly tuition (which is all the way at Lakeside), weekend
outings, and so on.
As an undergrad, regardless of how many buses or trains I took,
my total transport expenses were capped at $97/month thanks to
tertiary concession.
Now... it's gonna balloon. 
and when you throw in a few taxi rides for good measure...kaboom! a
few hundred bucks just on transport for one person. no wonder I see
so many of the foreigners and elderly folks risking their
lives by cycling.