The Trial Versions of the Angster Organ from KOrmend Catholic Church has a limited compass of C2-C3 (048-c to 060-c) in the pedal, C2-G5 (048-c to 079-g) in the manuals. All other functions work.
Free download the Hauptwerk demo sample sets:
Angster Organ from Kormend Lutheran Church demo part 01 (917.6 MB)
Angster Organ from Kormend Lutheran Church demo part 02 (552.3 MB)
Install the package01 and then the package02. It is important to sort.
Angster Organ from Kormend Lutheran Church only 49 EUR
I suggest you buy only after trying the demo.