I am still messing around with the trophy hunts in this region. I stayed on region 63 until 65 came out and then upgraded my weapons. I only purchase the required region rifle and bow. It cost over 800 trillion in Hunter bucks and a couple thousand in gold for those two weapons. I am currently at 5.1 quadrillion Hunter bucks and 246,000 in gold. If a region 66 comes out I may do the same and hold out to see if 67 comes out before buying weapons, they are expensive!