Wired ran a story about a 1954 Mamiya Speed Shot Special, otherwise known as the Mamiya Pistol Camera. With estimates running between 250-300 being made for police training purposes, one was sold at Christies in 1993 for $16,500. Wired published the story when one came up on eBay. The owner was asking $25,000, and no public record remains if the seller found a willing bidder at that price.
Bringing new meaning to the phrase “point and shoot,” these cameras are exceedingly rare, and actively sought by collectors. You never know what might come up at flea markets and garage sales, but if you can snag one of these at a reasonable price use extreme caution when even handling one in public before someone misinterprets your actions and alerts the police.