It's fairly easy for a frame builder to fix. Just grind off the broken one and silver-solder on a new one. But you'll end up spending a C-note to get somebody to do it for you, if you can find a local guy.
That's why I got myself a nice hot torch and some brazing bits and a internet connection to Nova Supply... that fix would cost me about two bucks worth of cable stop, silver, flux and gas. But it would take me an hour.