Hi, will something happen If i pay 400,000 Coins?
Or will I just get 350 coins reward?
I am going to collect money for weeks so I'm thinking if spending them would be worth it.
Nothing special happens, it's just part of the goal. You can hold off on this goal if you want to as completing it doesn't trigger any other goals. If we get another Monster Hunt, an upgraded arena will spawn a beast, but you can wait if you want to...