hehe, if u don't buy stock, u can save $ quickly ga la.
it depends on where u are working and the transportation cost is. lunch can be as expensive as $1xx in Central. but if u work in factory area, can buy lunch box set at $2x.
i used to work in central, average cost for lunch is $70. transportation cost is $20/d. so total is over $2000 (25d expenses).
when i first started to join the work force, I tried to control myself to use only $700 each week, but I couldn't.
bring your lunchbox lor! i brought lunch box sometimes when I was in labour force. saves a lot of $ ga. then u don't even need to spend a dollar if u don't buy anything.