How to Haggle: Successful Bargaining Tips
In much of the Mediterranean world, the price tag is only an excuse to argue. Bargaining is the accepted and expected method of finding a compromise between the wishful thinking of the merchant and the tourist. In Europe, bargaining in shops is common only in the south, but you can fight prices at flea markets and with street vendors anywhere. (Note that bargaining applies to goods, not to food sold at stands or outdoor produce markets.)
Read the rest of the article by Rick Steves to help you get the best bargain:
How to Haggle: Successful Bargaining Tips