Best Buy offers Assassin's Creed IV: Black Flag for PlayStation 3, Xbox 360, Wii U, or Windows for $19.99. (Amazon has it for PS3, Xbox 360, Wii U, or PC for the same price.) Opt for in-store pickup to dodge the $2.99 shipping fee. That's $5 under last month's mention and the best price we've seen. (It's also $35 under the best shipped price we could find for any version elsewhere.)