I just picked one of these up I know where it came from what I don't know is the value of this thing and what the tools on it are used for.
I've seen the PT-525's list from just under $100 USD to $140 USD. As stated, they are for dedicated IT usage. The 'punch-down' blade is the handiest bit for use on RJ 66 'wiring-blocks'. Especially, when checking a no 'dial-tone' situation at a local, and your tools are at the other end of the building.