Because I happened to have some free time, I actually went back and looked at my two episodes. In a 1981 episode, the winner got a trip to Mazatlan, Mexico. In a 1984 episode, the prize was $1000 cash.
I realize that the least important part of the show was the game itself, but I still found this interesting. No matter what happened throughout the show, the only thing that mattered was the last question, and for that question, they gave an ever-so-slight "pass or play" advantage to the contestant with the least clothes on. In other words, it was a game where, strategically (yeah, right...), the best thing to do would be to get every question wrong except the last one.