in economics,one thing called consumer's surplus,simply,that is the gratification of buying sth,so when u buy sth,just make this bigger. The saler will give u a price,and u must have a measurement price,that is how much u want to pay for it,and these two must have a difference,so one side should make a concession,or make a compromise.just rememeber,if you make a big concession,the consumer's surplus will fewer,and then your gratification will less . bargaining is funny,sometimes for the gratification,not the price.In college we had a class called Business Negotiation,and we had praticed to bargain each other,very funny.lol...

ask how much is it at first,then say"太贵了，能便宜点吗？"（tai gui le,neng pian yi dian ma ?）meas that's too expensive,may i get a lower price?

it sometimes save you about a half of the price if you live in china you should learn to bargain what's more some of us enjoy bargaining , you will be proud of yourself when you buy a thing with a lower price than the given price (*^__^*) ……

if you buy sth in a free market,you can enjoy your bargain. you can ask the price first,then you bargain to your ideal price,then the bargain goes on and on if you can reach a accordant price with the shop owner,then you can get your aimed one. But if you can't reach a accordant price with the shop owner,then you have two choices,to gave up or to accept the price offered by the shop owner.

buy things at supermarkets or malls, then you don't have to bargin, lol