Starting this week, frugal PSP gamers can snag UMD Dual Packs for 15 clams. Games come in genre-flavored bundles of two (Secret Agent Clank and Daxter, for example), and are also available for download in the PlayStation Store, if physical media isn't your thing.
PSP Dual Packs ($15.00):
Secret Agent Clank and Daxter
Syphon Filter: Logan's Shadow and Killzone Liberation
Syphon Filter: Dark Mirror and SOCOM: U.S. Navy SEALs: Fireteam Bravo