The aim of Private Storage Aid is to help stabilise the Community markets at times when prices are weak by removing supplies which are surplus to demand. This removal can be either temporary, where the product is subsequently released back onto the Community market after a predetermined storage period, or permanent, where the product is exported from the Community prior to the end of the storage period. The rates of aid set by the European Commission take into account storage costs, normal depreciation of quality and, where possible, any forseeable increase in the price of the product.