In 1982, while working at a hunting/fishing retailer, I bought a consignment S&W pre-29 .44 magnum, 6-1/2" blue. The original owner brought it in to sell. Still had the blue presentation case, all the tools, etc. It had been fired, had the faintest muzzle wear, call it 98% plus. I paid $375 for it.
I kept the gun for 28 years, hunted with it, shot it quite a bit, carried it in the woods, etc. Finally the collector value on it shot up to the point I couldn't justify using it anymore, so I finally sold it in 2010. I got 4 times what I paid for it. Took the money and bought an Encore, scoped, in .44 mag, plus a Taurus .44 mag revolver, and still had a good deal of money left over.
Sure, sometimes I wish I still had it, but the timing was right for me. YMMV.