For those who do not know, there is a thriving C2C(Client to client) vouchers marketplace over at Ebay and Carousell. I mainly hunt for grocery vouchers which help me defray some of my monthly expenses. Examples of popular vouchers you can find there are: NTUC, Watson, Isetan, CapitaMall etc. The dollar to voucher discount ranges from 4%-20% and sometimes even more. Carousell is a Singapore based app you can download via your iPhone. I personally find it to be more user friendly than Ebay as most of the users there are locals. You will also find more listings there.
Voucher hunting is an avenue you can look into if you wish to reduce your monthly expenses. I mainly target NTUC vouchers and try to get them at close to 5-10% discount to value. You can also consider CapitaMall or Capitaland vouchers which can be used for NTUC situated within Capitaland ......