Trombone Practice Book Set

This is a set of practice sheet music used for high school club activities.
SUPER SOUND TRAINING → No particularly noticeable writing.
3D BAND BOOK → There is writing on several pages as shown in photos 4 and 5.
Tipps → Photos 7, 8, and 9. The condition is poor. There is scribbled writing and rust stains.
Trombone Method Book → There is writing on a few pages as shown in photo 10. I believe it is within usable condition.
Music Stand → It has been reinforced in some areas and has white scuffs, but I believe it is still usable.

I joined the wind ensemble club as a beginner in high school and practiced using these materials. Everything shown in the first photo is included.
Thank you for looking.