A broker in the family
always helps. Otherwise ask people who bought boats in specific locations and they will tell you the story.
From my observations, the difference between the asking and the transaction is somewhat geographical/cultural - in some countries people haggle, in others they do not. I, for one, got my boat for what the asking was. But I hear from US people that there is a lot of haggling there - so the asking will allow for the fact.
All this is on the 'price' - what we pay for the toys. The 'value' is a completely different thing!