My son suffers from Gynecomastia...He is 18 and I figured it would have subsided by now. He has approached me about getting the surgery done. I really do not want him to do have the surgery but if it makes him happy then I guess it could become an option. Are there any ways he can reduce his condition without surgery? Would working out and lifting weights reduce his breast size? How much does the surgery cost?
Thanks!

Just make him wear a bra and save yourself money on surgery. Bras are much cheaper than the cost of surgery.