Well, just got home from seeing both of them.
The Frankenstein mobile was out the door for $200. Not bad but needs a ton and its been sitting for around 8 months, ran with no air filter and a lot of random welding has been done on the chassis, I could care less how long it has sat for. What I'm not too fond of its running without an air filter and all the boogered up welds on the chassis. Also, the motor hangs off the back so far you have to add weight to the front or it wont steer at higher speeds. That build hasn't been thought out at all.
The blue one, his price came down to $450. To me, that's not a bad deal at all. The kart looks great, is in great shape, it started right up and sounds decent, a little loud but nothing a new header/muffler cant fix.
I'm downloading some pics now, be back in a flash.