To understand the value, we must first understand the technical jargon:

You need a tool like multiMAN or IRISMAN to move files.

: Likely refers to individual "parts" of a large download split into smaller files (e.g., Piece 1, Piece 2) to bypass file size limits or facilitate easier hosting. Installation Process for Modded PS3s Installing DLC on a modded PS3 (using ) typically involves these steps: ROCKSMITH 2014 LEAVING STORES - Ubisoft

Always create a backup of your save file before installing new DLCs to avoid corruption. Alternatives to PKG Repacks

If you truly love the game and the artists, consider buying official DLC on PC or Xbox 360 (still available) and then converting it for personal use on PS3, rather than downloading pre-made repacks.