The Trial Versions of the Romantic Organ from Ada 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:
(Install the part01 and then the part02 and part03 of surround version. It is important to sort.)
Surround (and wet and dry) version The price is only € 79.
I suggest you buy only after trying the demo.
Wet-stereo version The price is only € 59.
Upgrade from stereo to surround version The price is only € 20.