Got an Email but it's open to all.
They are a good event, certainly worth doing atleast once to get the feel for it. Great if you are a part of a group.
Could be cheaper if you register a year in advance on site after running the previous year, but if not then this is the cheapest I have seen. A Good deal if you were planning to do it anyway.
Normal Price varies depending on how late you book.
From the page:
Bookings open:
15-17 of August.
2014 Events - $100
2015 Events - $89
Spectators - $10
REGISTER FRI.
Nice. I checked the other day and it was like $135/$145 for Saturday/Sunday. Now that it has come down to $100, that's pretty good.
Edit: Ah right, this is just for the coming weekend for the Global Mudder. Never mind.