Be aware that haggling down the price of any thing you buy,The seller,vendor mostly raise the price because the vendor knows very well the buyer will try to haggle it down. It is part of the culture,cloth,taking a taxi,souveniurs,even the hotel price...etc from 20% to 40%.Do your best ;)
If you enter a shop: Don't speak english(or your native language).Try to look kurdish! You have an advantage if your skin is not so pale(women can wear a veil for the time they are in the shop).
Try to learn the phrase: How much is it? as well as possible!
If the salesman recognizes that you are from abroad(especcialy if you look pale) they'l double or triple the prices!(thats not racism, they just want the money...)
Fun Alternatives: If you have a friend in the city: let him talk!