Frankly, this is getting a bit silly. I've got a 5.5x multiplier on 50% off (2.75x) the total. In addition, I'm now getting 2 rounds for every 1 round, and doing it all in 2 transactions per round. Can't figure out how to use the double coupon though, what does "activate" mean? Anyways, I decided to end the game after enough of it, and getting up to a 7x multiplier and $10,000 in the bank.