I've talked about event management plugins in the past. Today I found Event Espresso was has been developed over the last few years and is really chock full of features. These include:
Reusable email templates
Multiple Pricing Options
Invoicing (for those who haven't paid yet)
The free version of Event Espresso is called Advanced Events Registration by Seth Shoultes (not bad for single event possibly). The next level up is the version for $59 for a single site, and a multiple liscense site is $199 with more customizable options such as reocurring events. group integration and more.
If you are looking for an eventbrite alternative, this is it.
Check it out at eventespresso.com/