The invention is related to a storage cabinet (12, 14) for at least one of refrigerated and frozen goods (22, 24) for sale through that the cabinet door opens via entering of a door opening code in a payment terminal (18) with scanning equipment (20) for reading of codes which identify said goods (22, 24). The goods which are purchased by lifting them out of the cabinet (12, 14) are scanned with the scanning equipment (20) and are debited to a purchasing account associated with the door opening code. The cabinet is locked when the cabinet door closes. Further the cabinet rests (12, 14) on a weighing device (30). If a predetermined difference between the scanned goods' (22, 24) weight and the cabinet's (12, 14) weight occurs, the weight difference is registered in a transaction data file associated with the door opening code, wherein loss of goods (22, 24) is registered on a known purchasing account.