My 1967 issue of Flying Annual shows the 47G-5 selling for US$39,500. Perhaps someone can do the inflationary numbers but it's a lot cheaper than the cost of many of to-day's 47 component prices.
A local community college has a 47 J-2. Perhaps they might want to part it out or sell the whole thing for a decent price. If anyone is interested please PM me. However, it sat outside for a long time and then was moved indoors in 1985.