I am literally 13, but I would never try to sell something that I made in such a short time. I have never tried to sell any of my games, especially jam games. The game I am going to sell I have been working on for 3 months, and plan to work on for another 4. It's good if you want to monetize your game and hard work, but not during a jam. Make it free for the jams duration, then afterwards you can add on to it and sell it.