There’s a Square Enix sale going on at GameStop. It looks like a generic 50% discount on all Square Enix titles. However, it appears there is a daily deal at a deeper discount.
I believe today’s deal is the Dungeon Siege III bundle. It’s on sale for $6.24. It includes Dungeon Siege III and the Dungeon Siege III: Treasures of the Sun DLC.
Requires Steam activation.