ya, after few considerations still think that SC cards are good during new sign-up. upon then, should spend using cards like MBB2cards, Ocbc to get better cash rebates or points. Every new sign-up package is attractive. but not for existing customers. i wont if existing customer cancel their card, what's the duration of cooling period before they re-apply with SC plus eligible for new sign-up promotions

already used up all rebates?

seems like SCB card goodies are best utilized at the beginning. after finish, keep as spare or cancel.
how they get profit? keep attracting new customers: aiming for late payments / min payment customers?

Petrol CashBack is capped at RM48 per month per customer for applications via the Bank’s branches or direct sales agencies. This CashBack is further subject to a maximum total Petrol CashBack of RM1,600,000 from13 February to 30 September 2013, across all the Bank’s customers in this Campaign.

that means, max amount of petrol to entitle 15% is RM320

Source: http://www.standardchartered.com.my/person...-cvp/index.html