I have 3 that come to mind. A family friend gave me a '32 Ford "Banger" motor complete with a Thomas Intake, 2 -97's, and a Winfield Aluminum Head back in '03 In '06 I was headed to an auction that had gotten canceled. While in the area, I knew of a guy that had a couple of Norton motorcycles he thought about selling. I went to his house, struck a deal, and proceeded to part them out for 10x my money. Finally, a body shop in town closed in the early 80's and was not re-opened for sale until 2014. I bought a NOS pair of 68-72 Nova Bumpers with the blue wax still on them for $150. Sold them the next day for $950 on eBay. The remainder (99.8%) of the deals I partake in have not been so lucrative. I guess even a blind dog finds a bone sometimes.