I had one of these back in the day, held on to it for way too long. Eventually was doing some cleanup, and included it in a craigslist post for $10, along with a handful of other things that someone might still be able to use. I got a hit on it almost immediately, from someone with an email address at midway.com. Apparently, these were used in some number of coin-op games, and they're like gold.
So - if you have one in a drawer somewhere, it's probably worth some money today to the right person.