Demand for the Deskpro computer at Best Buy is $1000$ units per month. Best Buy incurs a fixed order placement, transportation, and receiving cost of $$4,000$ each time an order is placed. Each computer costs Best Buy $$500$ and the retailer incurs an annual holding cost rate of $20$ percent of the value of the product.Demand for the Deskpro computer at Best Buy is $1000$ units per month. Best Buy incurs a fixed order placement, transportation, and receiving cost of $$4,000$ each time an order is placed. Each computer costs Best Buy $$500$ and the retailer incurs an annual holding cost rate of $20$ percent of the value of the product.