Malaysians: how do you negotiate for lower laptop/pc prices?

ask nicely if that is their final offer, or if there are some promotions etc... most shops will go down with the price if you ask... for almost anything, not only for computers! The other day I bought light bulbs - not even that many - at Parkson and out of pure habit I asked 'ada kurang kah' (like: can I have it ceaper?). The lady at the til took out her calculator, took off 10% and rang the reduced price up without saying a word. Meaning: if you don't ask, you pay the indicated price...