He got rock bottom money for an immaculate bike loaded with extra's.
He told me that when he bought the extra's up as a bargaining point, the dealer told him that all these things make no difference to it's value.
To prove a point to myself, I went in there and expressed an interest.
They've got it up at well above it's book retail value, and when I asked them why, they said because of all the aftermarket extra's.

So the moral of the story is, if you must sell to a shark, erm I mean dealer, take everything extra that you've bought off the bike and put them on ebay.