I have to echo Dudemon, you really don't want to chose a surgeon on who gives the lowest price. Sure, I'm all about getting good value for money, but that is not the same as going for the cheapest.
If you can't budget for the work *you* want done from a reputable clinic, you're almost certainly better off not getting a procedure.
This is not meant to sound harsh or elitist, but the forums are littered with stories from people who have had disasterous results from "bargain basement" clinics. It's not just hair either, in numerous other forums I participate in you'll read similar stories about rhinoplasty, breast augmentation, abdominoplasty etc.
Look at it this way, do you *really* want someone sticking knives into your head based on the fact that they offered to do it for the lowest price?