The Trial Versions of the Luber organ of Csaszar V2.0 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 Luber organ of Csaszar v2.0 HW demo sampleset! (1.39 GB)
The price is only €
I suggest you buy only after trying the demo.