Wow! I think that thing is neat, could be better. But I hope the block is made of gold or something. I just don't see 9k at all.
I might call him up just to ask him why he thinks its worth so much.
"My wife can't stand looking at this thing that I built in my backyard and she told me to sell it, so I'll put a $9600 price tag on it to show her that I'm trying to sell it... not my fault the economy sucks.... bye, Honey - I'm taking the rat rod to the antique shop to buy more license plates."
You know, it wouldn't be terrible if he spent more time doing it right. Look at that horrible wheel placement in the front. Seriously, do it right and at least center that front wheel. I have no problem with a rat rod if people realize that rat rod does not literally mean throw a bunch of parts into a pile and see what drives out. Have some pride and do decent fabrication. If the stance was fixed and he did a little more clean up of the the things that are off, might be a cool ride.