They are, in the NA eshop at least. "Cyber Deals" its called and it'll be up to 30% off certain games. So far only a few games have been confirmed, including Mario & Luigi Dream Team, Luigi's Mansion Dark Moon, Wario Land 2, 3 & 4, Wii Party U, Metroid Fusion and The Wonderful 101. The deals will last from November 27 till December 2. Hopefully they'll have more games on sale.