"What is the least you will take?" If I have a price posted that is what I want. You are free to counter-offer but do not insult me with that line. I am likely to respond with "what is the most you will give me" (and usually the person then looks at me like I am an ass) or my version of "no soup for you". I love a good haggling session but when you use that line it shows how unskilled you are in the art of the deal.