At no event should you have to pay to pay for a ticket.
A booking fee is a buying fee; a scam that has become so prevalent that we have accepted it as reasonable. It is not.
When you buy hard goods the retailer's work is covered by the discounted price at which he buys in the goods.
The price you pay for the show should be the price that is advertised.
The promoter selling his tickets via ticketouts.com et al should discount them to the agent.