I have seen that boat personnally, not a total up close inspection, but close enough. IMHO, that price is more than reasonable, he has WAY more into that re-do.
I have a 1970 20' that I re-did, and my price is in that ballpark also.
http://www.parkeryacht.com/sales/used-sales.
Some people think they can or actually can do them cheaper, but in the long run, with time, exp, etc it is better to buy one re-done, provided that it has been properly done.
The boat you have inquired about, is a VERY nice boat, no expense spared.
OP