When creating a new event the user can specify if the event is a paid event.
NOTE : This will be shown only when the override is done to the create event.
There is a field "Ticket Price" to set the price for one ticket.
The user needs to provide his/her Paypal email id of the account where the user wants the money to be deposited. When the site Adminisistrator issues payouts the money of the user's share will go to this specified account