In terms of price, it's hard to beat the Ouya: 99 bucks'll get you the whole kit and caboodle. Still, it may be worth perusing the reviews for the Android-powered device before forking over the cash – critics have been particularly disappointed with the controllers.
Internal storage: 8GB on-board, but more memory can be added.
Controllers? One included with the basic kit; additional controllers will set you back a relatively hefty $49.99 a piece.
Launch titles (partial list): BombSquad, TowerFall, No Brakes Valet, Sonic the Hedgehog 4.
DRM? Not really applicable. The Android OS is open-source and (intentionally) very hackable.