I would suggest you "negotiate" not to get a lower price, but to develop a relationship with the vendor.
For example, what else does he (or she) have tucked away that he won't sell as part of a package for only $950, but that maybe you would like, too, for a price.
Also, is he going to suffer Sellers Remorse and change his mind before he cashes the cheque? Is there something he needs to talk about first?
Do you want to get to know this fella, in case there's a part missing he may have, or do you just want to take the fgrv and run?
There could be an interesting story here. Or just someone who is tired and wants it sold
quick, knowing it is underpriced, but willing to sacrifice cash to avoid the hassle of negotiating.