The price money has not yet been fully decided but it would probably be around 50 Euro. I am guessing PayPal would most likely be the method I'd use.
But don't get too excited. The winner will not be based on score or votes. I myself will pick on personal preference so it might seem a bit random to someone if the scores of the game that got the money are a bit low etc. I myself will also be part of the game jam but I cannot win the price money myself just so it is noted.
The price money is just a fun small bonus of the game jam and this game jam is quite casual so there won't be any proper guidelines on how I choose the winner just so you know.