If you've got a spare buck sitting around, now might be the time to blow it on a game. Disney's Castle of Illusion usually costs $9.99, but it's currently on sale for just $0.99, which is a full 90% off. Note, this deal isn't valid in all regions, but this game has proven pretty popular even at full price.
Update: The price has now also dropped to $0.99 on the Amazon Appstore. Go spend some coins, people.