Oooohhh - they're half off... or maybe this'll be the new price?...
$5.00US to replace my SH3 disk... hmmm...
You definitely need to get at least the "Silent Hunter: Wolves of the Pacific" and the "Silent Hunter: Wolves of the Pacific U-Boat Missions", even though they make it sound like an add-on. It is a requirement, because you cannot update the Steam v1.3 to Ubisoft v1.4, and the Uboat Missions is v1.5, which is what most of the mods are for anyway...