I made my auction board game, Going, Going, GONE!, to meet the needs of library gaming programs - it's easy to teach, handles a wide number of players, looks fun, and takes 20 minutes.
For the next 11 hours, it is part of a one-day sale at Amazon, where you can get it for $23. (it's normally $50).
It is part of a big sale - other good library games from the sale would be Splendor, Dixit, Cash and Guns, Dominion, Timeline and Love Letter.
Full Sale: