Jeff -
Take a look at the Fotga DP500 rig - I don't think you can get any cheaper than that, especially when there's a Best Offer on *bay, which does happen now and then. I own the rig, with the quick release, follow focus, and a few other 1/4 20 connection pieces, and it's solid as a (red)rock.
You should be able to get the rail system with tripod mount, quick release plate, and long lens support for about 100 bucks, then the follow focus for a little more than that. Other elements you need can be added, such as a flex arm, for pretty cheap. Bear in mind that these are coming from China, most likely, so you'll have to wait a while, but for me, the savings were worth it, and the Fotga DP500 system is just as good as the "caviar" models.
Joe Bourke
Owner/Creative Director
Bourke Media
http://www.bourkemedia.com
