Not sure if there worth anything but to me but some of my Valuables are:

Reactivate 1 :Belgian Techno Anthems
Smitten Ltd 01-10
Almost all the Nooms :roll:
4x4x9 (a must have, and might be my fav of all time)
Pibert - First Man on the Moon

Some of my favs whether they are valuable i don't know