In a shocking turn of events, Walmart has started a new promotion for Vita games. If you go on the website, you can get any 3 Sony published Vita titles, for the price of 1. Sadly Uncharted: Golden Abyss, Gravity Rush, Unit 13 and Resistance Burning Skies have sold out, but you can try your luck in store.
While this is a great deal for Vita owners, no end date was listed. It will most likely end next week, though that might be enough time to restock (if they plan to) the bigger Vita titles. Just something to keep in mind if you fail to match in store.