Still Trying to Rub Elbows

After trying to reach the box office twice, we decided to buy the tickets for Ian Anderson concert on-line. But...

$3.90 processing charges on top of convenience charges of $17.50??!! What is this?! Is there any other service in the world charging as much as 21% of the actual item you are buying?

Incidently, here is a group of people thinking along the same lines.