I got call from an antique dealer I know. "Want to buy a sack of old cameras for $500?" I went by his shop and quickly became the proud owner of a Leica CL with a 40mm Summicron, M2 body, M3 body, a 90/2.8 Elmarit, 135/2.8 Elmarit, 28/2.8 black paint Wetzlar Elmarit, along with cases, hoods, an assortment of filters, Rollei 35, Hasselblad meter prism, 150 Sonnar, 50mm Distagon, hoods, 12 exposure back, 6 or 7 Leica cassettes...it was a good deal! And all in great condition. An hour later my camera repair guy swapped the Hasselblad stuff for $600 cash and CLA's on the Leica bodies as needed.
I later found out that the antique dealer thought it might be worth decent money when I didn't counter offer $200 or $300 instead of just giving him the $500 he was asking. He'd bought the whole lot at an estate auction. Nobody else even bid on it. His winning bid was $25.