The cost depends on where and how the setup of the event takes place. If one wants to entice people to come for a long event, it might be wise to provide lunch for everyone involved. Also, getting a good camera crew to film the event can be costly. Typically, at a University one would want to raise thousands of dollars to secure the event and film it properly. Moreover, obtaining sposorships is a great way to get costs covered for the event.
==Date==
The dat e of the event is important. Make sure the date and time of the event is one in which your audience and mostly attend. Typically, weekends are good. Moroever, do not schedule the TEDx event around other popular events such as the NCAA basketball tournament or the Superbowl.