Bartering/haggling in markets
This is expected in most resorts and markets as a general rule- ask the price then offer 1/3 of that price, when the shop owner refuses, offer 40-50% of the original price, gradually increase your price to meet in the middle, if the shop owner won't accept a reasonable offer, walk away - you will often be chased down the road by the trader who will offer you the item at your price or very close to it. If the trader takes the item off you and puts it back on the shelf, you know you have gone below his minimum price, either accept defeat and try a different shop, or increase your price to a mutually agreeable level. You'll know if you are being unreasonable from the persons body language. Generally don't pay more than 60% of the asking price and nver accept the first price offered. Remember you can also barter in a lot of shops (not supermarkets though!) and also in restuarants (before you order the meal though, NOT afterwards.) Here you don't generally argue the price, but more the free extras such as free bread or a free bottle of wine.