Per the title: is there a safe limit for how much you can receive in one battle? It used to be around 65k, but I've been going with 90k per battle as someone suggested. Doe sit matter how much you gain per battle as long as you stay below 900mil?
Also, does the amount of money you get from selling units/items in one swing matter? That is, could I sell 100 Golden Gods at once and not trip an alarm?