I noticed that the ESRB ratings variants of two of the PS2 jampacks are not listed in the online rarity guide. Even the official playstation website doesn't have all of them listed!
Winter 2002 Jampack (RP-M) SCUS 97234
Winter 2002 Jampack (RP-T) SCUS 97235
Jampack Volume 11 (RP-T) SCUS 97417
Jampack Volume 11 (RP-M) SCUS 97418
I just found the RP-T Volume 11 at a local Wal-Mart last week. It looked like a full cardboard display they had just set out. The weirdest part? The RP-T volume 11 is cover priced at 4.94, while the RP-M Volume 11 is cover priced at 7.99!
I still wonder if there's a RP-T version of Volume 10 out there somewhere...