Hi guys, I’m having exactly the same problem, I spoke to a lady from Eventbrite who told me that I needed to change the currency from $ to £ then future events would use the £ symbol as I need, I tried and it didn’t work.
I phoned them back and they created an event via the web which defaulted to the £ symbol as needed but not when I’m using this plugin which is a slight problem for me.
I’m on WP version 3.4.2 & Events Calendar version 2.0.9
Any pointers would be appreciated cheers