If you want to get a lot of the Sierra Adventures for only 11 Euro head over to:
Police Quest Collection
Quest for Glory Collection
Kings Quest Collection
Space Quest Collection
General chat related to ScummVM, adventure gaming, and so on.
Moderator: ScummVM Team
2 posts • Page 1 of 1
On top of that, the first two Gabriel Knight games and Phantasmagoria are included in the bundle and also supported by ScummVM (although, unlike the games you listed I haven't played them)!