I have one of these (23", I'm 6ft4)) and it's too small for me. After moving onto track bars and moving the seat post up a bit it fit perfect (though still looks oversized)
Thankyou, Its nice to have a bit of encouragement. I am going to take the plunge. I have a feeling that the seller may very well be measuring up to the bottom of the seat bracket itself. That seat post is definately extended a good 6 inches.
If his measurements were correct then it would mean that the former owner was about 7 feet tall. I don't think so.
Get it. Try it out. If it's too big then resell it, if it's too small, adapt it, because it's a nice bike and definitely worth it