Unhappy buyer .What to do ???

My eyeballs hurt from staring at the screen and this ended up longer than I expected. I really don't care for drama or over-speculation. Unfortunately I got sucked into this and figure it would be best to give my side of the story while offering some of my own speculation, but trying to be objective.

Not that my oppinion matters, but bottom line is if a person want's as close to perfect parts as possible then they should be bought new and assembled by an expert that can be held accountable.

I can relate to buying and not getting quite what I wanted also.
Asking for some compensation wouldn't be out of line either, but I wouldn't expect it (Not saying you do, just saying what I would think if I were in your shoes)

I do totally agree that people jump the gun with accusations, and I wish it were not so.

Also, for all we know the seller was only able to make his house payment because of the sale, and literally couldn't give some of the money back if he wanted to.
He MAY however have something you need in the future and may be able to help you out that way.