Levi owns a store that sells cooking products to end consumers. He has worked with the same supplier for many years and trusts him completely. Whenever Levi needs to order new inventory from his supplier, he sends him information specifying the type of product, the quantity, the color, and some general quality characteristics. Levi has been with his supplier for years and knows how thorough he is. Finding defective products are so rare that Levi doesn't even bother examining the shipment, other than to make sure the products adhere to the standards specified. Refer to Scenario 8.1. Levi is getting ready to order another shipment of frying pans. However, he wants to switch from cast iron to aluminum. What type of purchase is Levi using?