I spoke to my guide a week or so ago about VDH (I'm local, so didn't buy, but was curious about some things). From what I understand talking to other guides (they see who your guide is when you give them your phone # prior to getting some SWAG or a tour), my guy is one of the more senior dudes and has one of the largest books of business (you won't catch him pulling shifts doing VGF2 room tours).
According to him, he'd swing 90 day terms, but it would have to be on something in the 250-300 point range depending on resort, just to get the conversation rolling. And that's with a current member he has had an established relationship with. Obviously, YMMV.