Some novels has variation of "shop" or "market" skill where they can buy stuffs from earth to the otherworld. What I am thinking is "Hiring" skill where the skill let you hire professionals like cooks, carpenters etc. Unlike the Shop where you can have it on one time payment , here the skill is by contract. Once you hired them, you have to pay their wages depending on the contract. The limitation I guess would be labor law related such as you can only make one specific worker work for 8 hours. You have to follow the labor laws if not the skill will be gone or at least suspend you from hiring for a time. Unlike the shop where mostly you do not know the the products are produced and seems be be immune to the laws of logistics, supply and demand. Here the workers are from another world and the skill are connected to the their equivalent of employment agency. The story could be the adventure of the skill holder, or the employment agency or even the worker.