I'm not sure but I remember Kevin & Tony carl talking about hoe many TB II's have been converted to IV's
A refin and low price mke it suspect. If that were a clean refin it should go for more than that. That's a tbird II refin price.
I guess even if it were, still seems like a fair price, if the neck has not been repaired as he stated.
Like I said Kevin Borden knows him and should have an opinion.