I packed one that was, as described, framing with plasticized fabric sides (think banner-material), and one that looked the same from the outside, but had plywood walls under its fabric sides.

If this difference matters to you, then you'll want to ask that question, too, when comparing prices.

Both times I packed them they were for long-distance, interstate moves where the pricing structure is totally different, so I can't speak for that local-pricing part of it. I can say they hold a *lot* more than it looks like they will, and it's kind of eerie to see so much living reduced to a tiny cube.