Suppose you bought 4 MUS tokens for 0.2 ether at the current selloutPrice: 0.2 / 0.05 = 4 (sellout -  the price at which tokens are bought by a participant).

If you decide to sell the tokens in the current package, then you can sell them at the same price as you bought.

At any time, until the package is closed, you can get back your 0.2 ether .

If you request withdrawal in the next package, you can request 4 * 0.06 = 0.24 ether

If you wait for the next packages, you can withdraw: 4 * [buyoutPrice] = …     (buyout - the price at which the tokens are sold by a participant)

For example, in the fifth package the buyoutPrice will be 0.085 ether, so you can max withdraw 4 * 0.085 = 0,34 ether