When Sony announced last month that High Impact Games' Ratchet and Clank: Size Matters was now part of their Greatest Hits series, we imagine it made quite a lot of PSP owners happy. After all, the resulting price drop made this title - Ratchet and Clank's humorous banter in tow - all the more easier to obtain.

With Secret Agent Clank's upcoming arrival, however, it looks like Amazon's decided to push the markdown even further. The site is now offering the game for a low price of US$ 15.00. That's a full US$ 5 lower than Sony's previous offering.

We remind the readers Secret Agent Clank's currently dated for a June 17 release. Those who haven't picked up Size Matters before may want to take advantage of this opportunity, given that it takes place just before Clank decides to turn super-spy. Amazon's game deal is available via the source link below.