In Saturday's Guardian there was a story which asked how much it would take you to leave your job.
Zappos, a shoe maker, offers its new employees $1,000 to leave the firm after completing their training.
This is to weed out the uncommitted or those unwilling to join their distinct culture and live the values. (Hate the phrase, agree with the sentiment).
The question is, what would it take for you to leave your job? Or how about not just your job, but your career? As the article points out, there's no right answer, but the amount you stipulate may be revealing.