PAI Medical Group offers proven solutions with a guarantee on our results. With the development of Multi-Unit Hair Graftingâ„¢ PAI Medical Group surgeons can now transplant up to three times the amount of hair in a single session as compared to most other transplant clinics. 80% of our patients get enough improvement in a single hair transplant procedure not to have another. Payment plans starting at $99 a month and terms as long as 60 months help make saying yes to the dream of fuller, thicker hair a reality for thousands who suffered from hair loss.