If you are present at the time of delivery, the delivery person takes back the cool box and box containing the dry ice. In this case, you aren't charged a deposit.
If the delivery person leaves your shopping at your front door, we charge a deposit of CHF 20 for the cool box. This is added to the total for your shopping cart. Deposits are charged per delivery, not per box. The next time you receive a Migros Online delivery, the delivery person will take back the cool box. The CHF 20 deposit will then be credited to your customer account.