When I was fourteen, I was willing to pay any price. I was able to begin when I was ready to lose everything... though, to be fair, I didn't have much.
I was in an odd spot in my life... I didn't even know my family, really, because I had isolated myself from them for years, just living in my own world. I had no friends, and no money. I did have an ipod though, and access to the Internet. Those things were pretty cool; the ipod allowed me to channel my hatred for everything into creativity, and the Internet let me plan transitioning so I wouldn't go crazy.
So, the willingness to lose family that I didn't really know, and friends that I didn't have, was easy. The willingness to be an object of hatred, so as to make me paranoid with every step I take, was less easy, but I was ready.
A lot of that stemmed from pessimism and grim reading, looking back. I haven't had to lose anything... and I have not been hated for what I'm doing by anyone. I'm still ready, every day, to make those sacrifices again if I have to, but I don't believe that my life will come to that. And for that I am infinitely grateful.
I just pray the day doesn't come that my life turns upside down. But if everything transition-related was reversed, then at least I'd have boobs.

Best wishes everyone...