As a seller, do you jack up your price, knowing that people sure bargain? Or do you advertise what you really think is a fair price (with some leeway for negotiation)?
As a buyer, do you expect the price to be jacked up, hence expect a hefty bargain?
I know it's a Singaporean thing to expect discounts and good bargains, but sometimes I observe people to give really insultingly low bids (speaking from experience, and on behalf of others). Ask for low price is one thing, but some are downright arrogant about it. i.e. your sell price is say, $500 (from a maybe $800 original price), then the fella offers $100 with a snobbish "take-it-or-leave-it attitude." It seems that some people will try to squeeze as much as they possibly can.
Seriously, what's up with that, man?