Thank you for your question.The procedure you are describing is called an Alarplasty. An alarplasty is the technique that is commonly used for nostril reduction. This procedure consists of making an incision on the inside or outside of the nostrils then removing a specific amount of tissue to reduce the size and/or make more symmetrical. I recommend that you schedule a consultation with a board certified plastic surgeon who specializes in rhinoplasty to have a nasal examination performed and a review of your medical history to see if you are a good candidate for an alarplasty. In regards to the cost, it varies based on surgeon and location. I can tell you that the RealSelf average cost for a rhinoplasty is between $2,000-$4,000. Best of luck in your endeavors.Sincerely, James Fernau, MD, FACSBoard Certified ENTBoard Certified Plastic SurgeryMember of ASPS, ASAPS, ISAPS, The Rhinoplasty Society, AAFPRS, OTO/HNS, ASLMS, International Federation for Adipose Therapeutics & Science