It would be nice to buy more gems at a time and be able to enchant things at a higher level.
I can only buy, at max, 1 quad gems at a time and to enchant something at max, I would need 82 quad gems to enchant something with 1 bil of max health. I have about 1.85 sext gold. I don't want to buy 1 quad gems 82x3 times.
My gold started to roll over and I got negative gold per kill so I couldn't buy anything from then on. Monster health becomes so high at level 10 million, it becomes negative and you can't kill them anymore
Right click -> More game settings