Have a saved game file from Ratchet And Clank Future: Tools Of Destruction to 
get a discount when purchasing the Buzz Blades, Groovitron Glove, Mag-Net 
Launcher, Mr. Zurkon, and Negotiator at the store. Have a saved game file from 
Ratchet And Clank Future: Quest For Booty to get the Pirate Hat for Ratchet at 
the "Community" screen.