It is difficult to provide an exact average cost for a virtual event as a replacement for a canceled conference as the cost can vary greatly depending on various factors such as the size and duration of the event, the number of attendees, the type of virtual platform being used, and the level of production quality desired. However, based on the information provided, a smaller one day virtual meeting with group discussion and presentations can cost anywhere from $5,000 to $15,000, while a two day event with a general session, 4 tracks, and breakout rooms can cost anywhere from $30,000 to $75,000. A three day event with multiple general session speakers, panel discussions, studio exhibits can cost $50,000 to $100,000. These costs may also include registration, ticketing, and participant management fees. It is important to note that these costs are just estimates and the actual cost of a virtual event can vary greatly depending on the specific needs and requirements of the event.