Let's assume that I am selling an apple. I haven't decided what price it should be sold at. And you want to buy the apple so you bargain with me. You could have bought it with $1, but you want to save more, so you ask me :"could I buy this apple with $0.5"? If I say "no", then you will further say "how about $1?"—— in a word, you don't make your best offer at the first time. You hide your real proposal behind for less cost.
Is there any word to express such behaviour ?
Update: Well, I didn't expecte so many people answered this question~ I have read all the answers. All of them are not wrong. It's my fault that I didn't describe my question clear enough. So I now add more details.
Actually, I ask this question because when trading, I always stand on my bottom line to make my best offer——If I think an item is worth $10, I will propse an offer that worth $10 and if I am asked to pay more, I will decline. While some traders hide their bottom line. For example, one may think my item is worth $10, and he attempt to exchange his item worth $5 for mine. However if I ask more, he would also accept my proposal, i.e., he doesn't make his offer best at the begining. I hate such behaviour but I don't know how to describe it. Here I learn the word "bottom line" from the accepted answer, so I can write a sentence on my trading profile: "Stand on your bottom line to make your best offer, please." Perfect.
As for the words "haggling", "bartering", "negotiating", etc... I think they have the similar meaning and can all answer my original question well, but didn't meet my real intention, which I didn't describe clear previously. I appologize for that, and thanks all~
haggle
is probably the correct term you're looking for above all else, and note that it can be used both as a verb ("John haggled the price down to a dollar.") and a noun ("They arrived at an unusually high price after an hour-long haggle.") However, keep in mind that "haggle" carries a slightly negative connotation to some readers, indicating that perhaps the haggler (person who haggles) was being cheap or, in some extreme cases, that they did not have enough money to begin with, though one might argue that's extreme.negotiate
(verb) ornegotiation
(noun) are more formal terms for "haggling", with one major difference: it is generally implied that haggling is an attempt to lower a price, whereas a negotiation is a much broader (and much more neutral/formal) term for discussing the terms of an agreement. When used in terms of price ("Jack and Jill are negotiating the price of the car.") it implies that the price could move up or down and neither party is implied to be greedy or cheap to any degree just by using the term by itself.