One member of the Rails Tutorial Vanguard requested paying in monthly installments, and that sounded like a good idea, so I've implemented it for everyone: membership in the Vanguard is now available for three payments of $165. But in order to keep the Vanguard as small as possible, there are only two places left, so act quickly while supplies last. You can sign up for the Vanguard here.
Given my present rate of progress through the Rails 3 tutorial update, I anticipate that the Vanguard will start in earnest some time soon after the 4th of July holiday break. I hope to see you there!