I recently set up the cart so people can register for more than one thing at once. It seems a few people have not been charged full price when using it though. Maybe its just the DTRegister records that are off though, I'm still having the authorize.net records checked.
Example one: Person signs up for a $250 and a $300 event at the same time. System says he paid $250 for the $300 event and owes $50. The $250 event is balanced.
A lady signed up for two $125 events and a $333 event and the records say she paid $125 and owes 208 on the $333 event.