I have no problem with the price....as long as it isn't over $2400 US dollars. To me they are priced antelope, elegant and beautiful. To get one over 28 inches, takes a lot of time hunting or good luck. For me personally, I think they are notch just below kudu, as far as must have in Southern Africa. To me, the waterbucks shot in the 24 + inch range...the trophy fee is usually too much, but it's a law of supply and demand. But the price for a heavy 28 + incher is well in line of the other game.
Yes, I think the bushbuck and nyala are pretty...and to get one with really long horns takes time and hunting the right area were habitat is favorable for them. And they are a way different hunt, than hunting waterbuck. Waterbuck can fill a whole pick up truck back up. A bushbuck or nyala are a lot smaller. Make a error in judgement, when shooting a waterbuck and you will never find him. A bushbuck or nyala can be shot with a 270 Win and they are not going anywhere fast.
I think waterbuck are pretty adaptive to their environment, where the nyala can't be transplanted everywhere.