Its like customizing an avatar... You (or the customer) picks a style, length and you press a button. Depending on your skill level, it either works or it doesn't and you have to try again- no bad haircuts. No real creativity involved.
I was doing 1 or two a night so I don't think more workers would have helped me.
Could someone conceivably hire third world people / turkers en masse to do this at a profit?