For Total Rewards Members only, Bally's Hotel & Casino in Las Vegas, NV, offers stays with prices starting at $15 per night. (Click here to sign up; membership is free.) That's $8 under our July mention and the lowest nightly rate we've seen for stays at this property this year. It's also a current low by $24. Stays must be booked and completed by January 31, 2013 only. Blackout dates and additional taxes and fees apply.