cost-plus
From Longman Business Dictionarycost-plusˌcost-ˈplus adjective COMMERCEMANUFACTURING cost-plus product/price/basis etc if something is made or done on a cost-plus basis, it is made or done at an agreed price plus an extra amount. This is done when the cost of making a product etc is not known at the time the agreement to buy it is madeIn the past it has been the practice for research and development contracts to be on a cost-plus basis.