Looking at the pictures......... "around here" that would be in a LGS for between $600-650 IMO..... the price of a "nice" Model 28........ and would sit awhile if there were any nicer K,L or N frame .357s in the case.

He might get $400 no more than 500 in trade or selling it to a LGS.

He needs a buyer who wants a "shooter grade" 6" Model 27.