Not sure if I am late to the party here, but these CD's do appear to be pressed, unless I'm just some clueless noob. Here, I'll snap a photo.
Sapphire is pressed, yes. The only ones from the German that were CD-Rs are-are-are Rrrocaine + Space Fantasia Zonin' Bone Ordinance.
HailingTheFish, you're right. The other two just have a paint coat to them. Kinda ghetto but Sapphire and the stuff that's in the PC Engine Memories are all pressed. Pressed so hard you'll fart.