If I really want to go, I go. Regardless of fees and all that. At this point, I just count them as a part of the price of admission and don't really differentiate between what percentage of the cost is just the ticket and what part is just fees.
The most I've ever paid for a show was about $156 for Rush in 2012 and $150 for Black Sabbath this year.
5/4 - Rob Zombie
5/11 - Ghost
5/13 - Mastodon / Gojira
5/21 - Primus
6/28 - Iron Maiden - Bergen, Norway
7/1 - Iron Maiden - Luxembourg