Half of Maersk Air's accumulative profits came from the sale of used aircraft. Inspired form the importance of crucial timing of purchase and sale of ships, Maersk Air made several advantages deals. One of the involved selling 737-200s at a higher price than they had paid for them. Maersk was an early customer of the Fokker 50, of which the first was delivered in 1988. As part of the purchase agreement, they would receive DKK one million per sold aircraft in the Nordic Counties. This turned out well as SAS and Braathens SAFE bought a combined twenty units.