A method of marketing component products to producers engaged in the production of composite products utilizing such component products, and the sale of such composite products to end users, generally consisting of distributing software to such producers, functional to design the composite products and including advertisements soliciting the sale of component products; receiving electronically over the internet from the producers, orders for the purchase of selected ones of the component products; transmitting electronically over the internet to selected ones of a set of vendors, orders for the purchase of component products corresponding to the selected ones of the component products ordered by the producers with instructions to ship the ordered component products to the producers; receiving invoices from the vendors of component products shipped to the producers responsive to purchase orders received by the vendors, and remitting payment thereof to the vendors; and invoicing the producers upon confirmation of the shipment of the component products by the vendors to the producers.