I think there are two categories of "riggers" belt -
The original concept was a belt that was capable of supporting body weight in an emergency situation (so could be used to anchor yourself to something, rappel from, etc.) Belts from the Wilderness, SOE, Tactical Tailor, Blackhawk, etc. fall into this category. Most run $40 and up.
Lately, I've seen nylon web belts with a 1-piece metal buckle for the new digital-camo type uniforms. As far as I can tell, these version are NOT designed for body weight (webbing is probably strong enough, but no guarantee about the buckle strength, or whether it will hold the webbing under load). They run about $10 or so.
First version is good if you want the emergency anchor capability, or if you want to attach several heavy items. I have a wilderness 5-stitch model, which works well. The attachment point is integrated into the buckle (most other belts have a seperate triangle- or D-ring for tie-in) which cuts down on the bulk, and smaller widths are offered for use with jeans and other pants that don't have extra-large belt loops. Downside of these belts is that they are stiff, and can dig into your side in some situations. Also, if you want to use the anchor capability, be careful to keep battery acid away from the belt and away from excessive UV exposure - both break down the nylon.
The cheaper riggers belts are fine for holding your pants up and strapping on lighter items. Supply captain is a common source for paracord and other nifty things, so they're probably OK to order this type of item from.
