Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Production Gear › Decent Tripods, Relatively Inexpensive › You can also check out eBa
You can also check out eBay – I got a Bogen Professional tripod with a nice fluid head and big control arm for about $100 (worth ten times that). I had to tighten some nuts but it now works great,
Of course with eBay, as always – caveat emptor! Check out the seller and item description very carefully.