Know what you want to buy
Ask the price even if listed
Say that you cannot spend that much money
Offer a little less than half the price
If seller is not willing to match offer attempt to slowly walk away looking back
When seller stops you and asks how much more you could pay, offer half price
Seller will make offer with price lower than originally stated
Offer one more time the same price as your second offer
If seller agrees to sell at your price, purchase...if not walk away and attempt at another shop this bargaining procedure
