I do a good bit of the more difficult repairs and setting work for several other jewelers nearby. They each have their own shop, but I have a laser, and over 40 years experience at repair work. They will send me the work that they feel I can do better than they can in their in house shop.
I never sought this outside work, or advertise for it, but when a jeweler come to me to help them out of a bind, they very have often continued to bring me jobs that they feel they are not well suited to doing themselves.
Repairing jewelry, while it is related to creating jewelry uses another kind of skill set, and one that requires a broad selection of tools and techniques that not every shop has. Why not find someone near you, who has the skill set, as this lets the producing jeweler continue to do what he or she does best, and at a better profit than they might earn doing an occasional repair?
Just my opinion.