for bigger items or things you can check it on www.taobao.com shoes, clothes watches, pants,underwear computer items hard wares phones just type inside taobao you will have a general idea about the price and place as well.

                     normally in market  you ask from shop to shop do discounts with them if they say 300 you give them 70 later see the expression on their face if they come down from 300 hundred that's when you get the idea that you can bargain in it so continue in it, do not shop around in 1 shop keep on changing it. never trust Chinese in business.  do window shopping generally collect the prices in your mind so you will be having an idea of market and prices. for fruits big shopping malls like tesco, Rt mart, walmart, jusco,synomall, metro,are fiine

no there is not-especially if you have a white face. you need to shop in known chain stores or have a Chinese person do the shopping for you.i do not have one foreign friend that has not been ripped off. but i have many who have been stolen from many times.