Why is there such a difference in the cost of revision rhinoplasty?

I had a nose job done once, but I'm not satisfied with the result, so I'm considering revision surgery. I'm looking into the costs, but they vary so much from hospital to hospital. I knew that revision surgery is more expensive than the first one, but I heard that it's due to the materials and the difficulty of the procedure. The cost jumps significantly, especially when autologous rib cartilage is used, so I'm wondering if this is really necessary for my case.