The price of your event and your venue are inextricably linked
Your event must have a high-enough price to cover the costs of your event, as well as to provide you a revenue stream, if you're expecting to make a profit from the event attendance itself. As the venue itself is probably the single most expensive aspect of your event, the price you charge is directly related to what venue you select. Make sure you price a ticket to your event accordingly to correspond with your venue.
When Pricing Your Event, Consider Your Target Audience
First and foremost, you must price an event for your target audience. If you're charging $1,000 for a local business to attend a one-day event, you might be charging too much. Conversely, if you're only charging $150 for a three-day business conference, your price is too low and businesses won't take you seriously.