I don't know about that....Lol. You're embarrassing yourself.
I suggest you do some research
If it was a H1, $5000 is reasonable, but I haven't seen a KH1 go for that much... YET.
Just cuz it's old and two stroke doesn't necessarily mean it's worth a box full of dollars... if it did I would be a rich man (I'm not).
A $5000 KH1 would have to be "concourse"