Sometimes you have to look at a gamble with this equation:
Your $$$$ + Risk = Possible Reward
Lots of variables. But my biggest question is: If you made a mistake, could you afford the mistake? My father always calls to tell me about the item he passed on at a yard sale. He'll describe the item then follow it up with: "They wanted 10 dollars, should I have bought it?" My response: "If you spent the 10 dollars and then lost on the gamble would this mean you'd be eating 'Mac N Cheese' for the next 2 weeks? Sometimes a mistake is what I consider a down payment on your continuing education. If we never make mistakes then we are not really making progress or learning. We can't win all the time. If it wasn't for risk, the Wright Brothers would have been known only for their bicycles.