Is it a prize that would improve your life? If so, then it may be worth the chance. How much will the $50 hurt you? If it will make you sacrifice to the point that it hurts, it's not worth it. If you can save your change and cut a few things out, then, it might be worth it.
The question you have to ask yourself is "When I lose, will I hate myself?" Because the odds are still not in your favor. Only spend as much as you are comfortable losing.
Sorry I can't be more help, but I don't know enough about your situation to really help.
Good luck with the decision and, if you go for it, best of luck in the Raffle. :sunny: