Well, I heard of people selling their hair for extreme amounts of money. For only like 10-15 inches is $500! I have healthy, shiny,wavy, blond hair, that's never been dyed or had any chemical change. I would be willing to sell about like 13 inches once it grows just a little more. How much do you think it would sell for?
Not much cause those companies prefer the hair come from Indian, Japanese or Korean women cause they're used for cosmetic purposes(weaves). They want the typical black or dark brown, straight, silky hair cause it's a very in demand product.
Just donate it! I have friends who also have virgin hair who've donated.
It depends the barbershop. Some mean guys will give you less money. How about asking this question to the barbershops nearby your house and sell it to the higher price. Even you have such a nice hair, what a pity to cut it down...