That's a possibility. More background, the setting is Eberron, and the elves are Aerenal. The Half-elves in question are from House Lyrander, and the contract is buying the soarwood needed for airships. The elves made the deal before airships were a thing, and now they are upset at how much they promised to export, the prices they are paid, and that they don't get any of these fancy airships.