Paid Event Signup Registration?

[Tigur]

I've looked around and can't really find anything specifically like this. Pretty much something that can integrate with vB that is similar to the event attendance except you can populate multiple fields and users are then sent to paypal or another checkout to pay for the registration fee to sign up for the event. As well as an automatic e-mail that will send out an "authentication key"; and a waiver, so that way when the event happens and the user shows up, they present their authetication key and can look over a list and cross them off so they do not have to pay. (On the reverse side also a way for the admin to print out a list of all users with all their information and their authetication key.)