The cost of surgery, any surgery, can greatly vary and is dependent on the training and expertise of the surgeon, level of difficulty of the problem at hand, length of surgery, surgery center accreditation, quality of anesthesiologist, and what else is included (postoperative visits, postoperative kit, etc).
If you are going to the best of the best surgeon who is appropriately trained and board certified and the revision is quite difficult requiring multiple cartilage grafting for reconstructive components, this may be reasonable. While this cost may seem high, it is difficult to say without assessing the situation; if there are reconstructive components, it may be reasonable. Please consult with a facial plastic surgeon who is board certified who can assess the inside and outside of your nose and help assist you with achieving the results you seek. Computer imaging will also help you visualize what you may look like after surgery.