Until Saturday, Amazon has several Sega titles deeply discounted for procurement through downloadable means. Although the sale has been going on all week, both Total War Shogun 2 and Shogun 2: Rise of the Samurai were added today, at $7.49 and $2.49, respectively.
Other deals include Sonic the Hedgehog: Episode 1 for $5, along with Sonic Generationsand the 48-game Sega arcade bundle for $7.50 apiece.
If strategy and platforming isn't your thing, there's also the non-Sega NBA2K12 for sale at $10.
http://www.amazon.com/gp/feature.html/?docId=1000716161