Of all the titles released Epic Mickey 2 is a little surprising to see. The game was originally released across multiple platforms in 2012, with no sign of a PC port, and the dev studio was also shut down by Disney a couple of months after the game came out. So, now it suddenly appears on Steam.
Looking at the selection of games, I can say I've not played any of them, although there are two which jump out as clear contenders for your cash; Pure and Split/Second. Looking at the reviews for those games it appears they were well-received, so if you want yourself some Disney-developed racers, they could be for you.
Take a look at the Steam store to see all the Disney games and bag yourself 10% discount on any you pick up until 12th October.