Anne McCaffrey's Killashandra is currently $3.99 at Amazon US
http://www.amazon.com/Killashandra-C.../dp/B000FBFM8O
At first Killashandra Ree's ambitions to become a Crystal Singer, get rich, and forget her past, were going just as she had hoped. But after she grew wealthy, a devastating storm turned her claim to useless rock. In short order she was broke, she had crystal sickness so bad she thought she was going to die, and the only way she could be true to the man she loved was to leave him....