It is important to first see a specialist to determine if you are a candidate. If you want your hairline lowered on account of a congenitally high forehead AND you have a good donor area in the back of your scalp then you may be a good candidate. However, if you want a hairline lowering on account of other hair loss conditions such as frontal fibrosing alopecia (FFA), this may not be a good ideaDepending on the width of the forehead, and amount to restore at the sides, you would require 1500-2500 graftsPrices range 2.50-11.00 per graft across North America, depending on FUE vs FUT. In general, $5000-$11,000 would be your price depending on the exact number of grafts and if you choose FUT vs FUE. You may find less expensive and more expensive as well. I wouldn't focus as much on price as the only factor but also experience with female hair restoration aesthetics. Transplanted hair is permanent