Remote Attendance - information request

[Nelson Nazzicari]

Hi,
I'm considering attending the 2013 Gmod meeting through the remote presence system. I'd like to know:
- what kind of software is required? (we have linux based system and gotomeeting support is not clear about it, but maybe it's only for organizers and not attendees)
- should I pay the regular 100$ fee or is there any different pricing?

Thanks,

Nelson