On August 9, 2016 going to release the Japanese version Ratchet & Clank THE GAME which is the latest title of the series. The game already available from 2016 April in North America / Europe which is by the way the first, PS4 only game of the Ratchet & Clank saga.
Sony to celebrate the release of the game in Japan started a special price cut with the previous series in the Japan PSN. You can buy selected Ratchet & Clank games (PS3, PS Vita, PSP) with 40% OFF from July 6, 2016 until until August 2, 2016 but if you are a PlayStation Plus user you can get them with 50% OFF!!
The special prices available only in the Japan PSN and only for the digital version games. Package version games available for the same prices or depends on the store.