National Service (NS)
Asked on 20 Oct 2018
NS SAFRA Debit Card
Firstly, you have spend a minimum of $400 every month in order to get cash rebates from your purchases/transactions.
Secondly, even if you spend at least $400 a month, the cash rebates are in the form of SAFRA$ and can only be used at the various SAFRA clubs.
So if you don't visit SAFRA very often or are not a SAFRA member, I don't think it's worth it.