Bill,

I'm going to do more research and testing on this feature. It's a request I'm seeing more and more these days. I tried using Conferendum for this purpose on a client's webinar and although the idea was there, the practical implementation was poor and we were both dissatisfied.

ConferTel will build out a custom shopping cart interface for you, as will several other vendors, but this is only practical from a cost and setup perspective if you are doing a very large event or an ongoing series. It's not built in for do-it-yourself registration setup.

TalkPoint added an ability to charge for events, but I haven't tested out the implementation yet. BusinessExpertWebinars.com now has the ability to "private label" an interface for events done using their technology. That effectively gives you a shopping cart system under your name. They work on a revenue sharing model.

We need more vendors and easier ways to implement this!