Amazon has the Guess Who? board game on sale for just $4.99. This ships free with Prime.
There are several other games available for under $5, but the are add-on items. This means that you must have a minimum order of $25 for Amazon Prime members, $35 for non Prime members. The add-on items do count towards the total.
** Prices and availability subject to change. Make sure you confirm the price prior to purchase. If the price noted above differs from what you see on line, it simply means that this deal has expired since the time it was posted.