In the list view, each auction for which COSCheck Plus is bookable is marked with a guarantee sign. With one click you get the basic information about the guarantee. The COSCheck Plus guarantee must be confirmed during the check-out of each bid. In the Hotbid phase, the guarantee can no longer be selected. If the warranty was selected before the Hotbid phase, it is considered booked. After the purchase, no guarantee can be booked for the time being.