For 50 USD you get 28 mini-games, about 20 of which are actually worth while and none of which will keep your group playing past the first week. For 50 dollars, 10 dollars less than Breath of the Wild, you get a glorified mini-game collection. There would be no justifiable reason to buy this game for 30 dollars, let alone 50.
At first 'Monster Hunter Generations' seems like a rehash of past games, but some play time will show that it is one of the most innovative in the series. The sheer amount of experimentation, adventures, and general fun to be had with this game is boundless.