rottun,
I understand where you are coming from. I researched several Doctors and went with the one I felt was best. If one said 2500 hairs and the other said 800-1000 grafts (at 1-4 hairs per follicular unit) then the quotes are close in hairs, but not in price.
I was quoted 2,800 to 3,000 hairs (because I have fine blonde hair). The most expensive was $8k and the cheapest was $2,700. Trust me, price was secondary, but it was a factor.
I ended up with 1,205 fu (1 hair fu in the front hairline and 2-4 hair fu units behind those)for a total exceeding 45 fu per square cm.