There isn't any specific rule saying that a player is legally bound to payout their own events that they "set up". The only rule we have in regards to scamming is players trying to deceive you into giving them money for whatever reason.
i.e
Scamming
Players attempting to scam players out of their cash in game will be punished. This means no pretending to sell a player a vehicle, no pretending to give a player something "cool" if they give you cash. Basically, no tricking other players into giving you cash.
In future I suggest to only participate in official events held by admins rather than random players on the server as you risk this happening.
