I'm friends with a guy who is CEO of VidSoft, a much lower cost, software-only alternative to WebEx. I have it on my laptop and it's great! I was in Cabo over Easter and was VidSofting with someone in Florida and Boston.

Vidsoft's about $30 per month or so (no per-minute fees) and allows up to 10 endpoints to meet simultaneously so all 10 can be seen, heard and share documents. I suppose one or more of those endpoints could be a webcam pointed at a group.

Scott, my friend at VidSoft tells me that it can reside behind a company's firewall if they prefer.

If you want, PM me and I can give you info.
Rita