While Blizzard gears up to launch StarCraft II: Heart of the Swarm in about a week, you can gear up for StarCraft II: Wings of Liberty now for 50% off on Blizzard's Store.
Originally the game was dropped down to $39.99, and now, you can grab it for $19.99. As of this moment, this is only at the Blizzard Store, and the deal is only applicable to the physical copy of the game.
Save 50% [Battle.net]
via destructoid http://www.destructoid.com/starcraft-ii-wings-of-liberty-is-50-off-until-march-12-247697.phtml