Eventbrite is the online registration and payment system that a number of us have used to help run our dos. This is a heads up for those like me who might not have looked at it recently - the free version is becoming a lot less useful shortly, as we will no longer be able to create multiple tickets or take payments of more than $20000 (which sounds a lot, but I processed nearly $10000 for the London Mega do

).
If on the premium version, fees are 2.5% of ticket value, with a minimum fee of 99 cents.. which means on any ticket value less than $40, the % is rather higher
I've had a look around for equivalents, but the closest I could find had a fixed $4.75 fee - however, payment options for do organisers were horrible if outside the US (I really don't want them sending me cheques on a monthly basis in US $!), and they also did not have the simplified payment system that eventbrite has
Looks like increased fees for attendees, or back to trying to keep track ourselves again