Keep in mind too, that if there are other people interested that once one offer comes in, the agent will call in all other interested parties to put in offers too, so you may not have the luxury of being the only people negotiating? Depends where it is and the situation I guess, we were lucky that nobody else was involved and were able to go in low (well under their listed price which was just over 10%) but if others were involved we wouldn't have taken that risk.