I do enjoy the art of "dickering" but there is a line where it becomes insulting. some people do not know where the line is. you do not offer $200 for something when the asking price is $500. I may ask if they would be willing to take $450, or maybe $475. the seller can say no, you never know unless you ask. I know several people who always ask more than they are willing to take ,just for the reason they expect to be negotiated with. that said , if they are firm and I want the item I pay the price. there are many times though that stuff is a really good deal and then I will not try to negotiate the price. I never make any counter offer unless I have seen the item in person, and then I ask if the price is firm, or not. and you go from there.