What Casino would you buy? After taxes and stuff would 300 million cash be enough to be enough to buy Bills or Casino Royale? Maybe Binions Downtown. If you had the cash to buy one of the lower end casinos would you? What if you had to spend every dime of your winnings? If I had 300 Million cash Id at least think about it. Bills is a diamond in the rough. 3-2 blackjack and good pay tables and I'd have the place packed in no time.