I've tried to look up whether AIs are ever willing to sell their cities but to no avail. So i thought i would ask here. I tried buying cities from allies with 8-10 cities and even trying to buy new cities with 2 pop. But noone ever was willing to sell, i had 10k gold 120 gpt and was willing to put in all my strategic resources and luxury resources. Is it possible? DO i need more gold?