This is a YA novel following an (understandably) angry 17 year old and her best friend, a geek she forcibly adopted. They run away and stay with some slightly older kids living in a warehouse and jump at the chance to complete a physical fitness test for $500 each. They are essentially kidnapped and taken to a fae land where they face deadly obstacles (view spoiler)[don't worry, they do all make it out alive, even though they die...yeah, some magical behind the scenes, look, it's all OK! Slightly annoying, but hey, at least they're alive. 
 While the main character isn't the most logical of people, she is a fighter and goes with her instincts. The book ends on a cliffhangar, but the author does note that you can go online and read the first four chapters of book 2. I've bought book two and plan to read it soon. (hide spoiler)]