About a month it is still somewhat new, adds are on bitcointalk and will probably be on for at least 12more days

@luckchase : you wanted to sell and buy back when the bonus is higher?

You can't sell at less than 50% bonus now, I wanted to sell after the bank but jimbo2312 cancelled his sell so I sold my level before getting the income And I received the bonus sell in my wallet in 2h45minutes