I'm not knowledgeable about summits / conferences. Is $600 a little or a lot? It sounds like a lot to me when I convert it into other ways to spend the money, but maybe this is normal for these things...
$600 is not a lot at all. Most business and non-profit summits easily pass the $2K range, and that's without throwing in deliberate ostentatious signaling.
You can get more info and register to attend by filling out the form on the summit website.
The link to the summit website is dead. Here's the working link.
This is a followup to Ben's post announcing the 2014 EA Summit.
The Effective Altruism Summit is now exactly one month away.