To know if you are an eligible canidate for hair restoration you would need to see a hair restoration specialist. From the website i found there is no minimum age for treatment, however it does say that most are over 21.Hair Restoration generally costs between $4000 and $5000 but can get as expensive as $12000 depending on the doctor, and how much you are getting to restored. The website I found mentioned that grafts cost between $3-$10 per graft but the number of hairs a doctor puts in per graft can very so it suggested seeing a doctor and asking him/her about it. If I was doing hair restoration I would see a few different doctors and weigh the pros/cons of each one to make your best decision. Who knows you may be able to mention the different prices to each doctor to see if you can get your favorite to lower his/her price!