A shofar does not sound like that naturally as they are made with very little change from after the bone is taken out. However if you boil it it softens and can be shaped which will alter the sound. I have in fact made them from scratch, and after hearing that absolutely beautiful music, I think it may be possible to alter one to sound similar.
However, the problem is is that the shofar started off as an instrument for military signals, and generally has a high piercing tone, and is sounded like a trumpet, whereas the bukkehorn has a medium low, very musical tone, and to me sounds very flutelike. The tone is made by the length of the shofar, so you would want a fairly long one for the lower tone and then you would have to experiment for the placement of the finger holes.
However for one twenty-fifth the price I figure it couldn't hurt. I might try it out, just to see what happens.
edit to add:
The sound may actually be achieved by a reed insert.