UniSalad does not allow sales of tickets above face value. If you are reported for selling above face value, you may receive a warning message from the App Admins, and face the possibility of having your account permanently deleted without warning.
Some clubs/events in your city may allow students to resell their tickets for a price slightly above face value (maximum up to 1.5x the original value). It is the seller's responsibility to find out if they are allowed to resell their ticket for higher than face value by visiting the club's / event's website, social media pages or by contacting them.