Stock is valued at the lower of cost and estimated selling price less costs to complete and sell. The cost methodology employed by the entity is the first-in first-out method. Estimated selling price less costs to complete and sell are derived from the selling price which the goods would fetch in an open market transaction with established customers less the costs expected to be incurred to enable the sale to complete. Provision is made for slow-moving and obsolete items of stock. Such provisions are recognised in profit or loss.
Work in progress is valued using the percentage of completion method and values are calculated using the lower of cost and estimated selling price less costs to complete and sell. When stocks are sold, the carrying amount of those stocks is recognised as an expense within cost of sales. This takes place in the same period that the associated revenue is recognised.