the only reason t-shirts should ever be that high is if there are union/venue fees of $5 or more tacked on, which always happens at arena shows. not sure abiut a venue this size though. t-shirts cost less than $10 per shirt to produce for the band/merch company, so a markup like that is highway robbery.
The Breeders-12/19 at Webster Hall
Dark Tranquility- 2/3 at Stage 48