I just posted a new thread with some prices but it needs to get approved by a mod.
In my search I've seen $6 (Neograft), $10 (artas), $6.50 (Bosley). The Neograft is in a plastic surgeon clinic. While the other 2 focus on hair transplant - Ziering and Bosley.
Not sure if these are within the 'normal' band either...