please confirm where are the discounted brand new release games from sony, which retailer thanks.<<
Look around the usual places and if you know the store staff well they offer even better discounts. I tend to avoid buying used games as most new releases need online passes these days which cost $9.99 US each.
As I said before a lot of the cheapest deals are Korean games which have no DLC or online pass support in HK, US or UK marketplace. A lot of these Korean games are bought in bulk used or damaged, repackaged in SSP and distributed to be sold cheap as new items. I know the guy running this racket & and he also has 20+ id's on Yahoo doing exactly the same with local releases.