Small physical casinos cost up to $5 million, and medium-sized casinos cost up to $20 million. Casino earnings depend on the location, size, games offered, and reputation. Before you build a casino, you must have at least $500,000 and up to $4 billion in your bank.
In a 2-1 bet you bet 1 unit and if you win you get 3 returned. In casinos 2-1 bets are on 12 numbers 1 to 12, 13 to 24 and 25 to 36. In fact they can be any combination of 12 numbers be they in columns or rows. However, normal dozens are considered outside bets and often have a minimum stake of $5.00.