The asking price is way out of line. $5700 is out of the ball park. More like $1500 to $2200 max. I've seen many fine examples for less than $2000. That one isn't restored to stock condition and the modifications he made didn't add any value.
He did a lot of work (he says) but I have to wonder why he found it necessary to rebuild an engine with only 11,000 miles on it.
89 VN 750A - Given to son-in-law
79 CB 750K-sold 3 May 21
78 CB 750K
77 CB 750K
77 GL 1000 x 2
77 CB 550F
Holton, KS, US