1. Rewarded items(ISE, Gift, Redeem code, game/event reward)
2. External region items(few expect ions some early on shared same item codes for ease)
3. Non localized items, usually refers to lack of details and localization of region as well
4. Bundled items, even if sold as seperate the bundle tends to have different item code
5. Items listed as free(not $0.00, but as "FREE")
4. Provisioned items such as guide/mod/dev items or items from "Full Game Immersion"
5. "Missing items" items that were at cause of removal or revision
6. ICE items(specific type of hack) ice items not purchasable cuz of the nature of them mismatches regional profiles
To prior post about bundles beig able to purchase.... Bundled its as in items with more then 1 wardrobe item.. Example is Santa bikini from GZ.. Cuz it has hats, boots included with the bikini cannot be purchased..any part of the bundle... how ever items like standard bikini.. Some people consider complete outfits bundles, u can purchase via PI. Note that outfits sold without other items are not bundles...
I bought the Street Fighter alternative costume bundles via inspect off of Stephie. Selected one piece of the bundle and you can buy the whole thing, the three I got consisted of three pieces each.
It would be nice, since the holidays are coming if Sony made a machine that would give free items away for free again, just for a while.
If they announce Home won't be going to PS4 or that they'll be shutting it down then they should just give everything away for free.