Actually just made a purchase and so far, I rather like it. I figured out that there are two basic styles - one panel or multi panel, and three different lengths - ankle grazing, mid calf and mid thigh. There may also be a shirt length version. Definitely a OSFA garment; the construction is absolutely flat, no tailoring, but for many of the garments on the website there are dimensions (which vary, given the handmade nature of the dress).
It was a lot heavier that I expected it to be but in hindsight it makes sense. They are made on a base fabric that's a pretty heavy cotton, presumably to accommodate the weight of the embellishing threads (I'm no weaving expert). So not a lightweight garment. The joining embroidery is tight enough that it works as a dress and not just a beach cover-up; no undergarment concerns. And there are pockets (!!!).
I haven't looked at other companies, but this technique seems to be artisan driven and there is a 'hand' to them that I wouldn't expect a fast-fashion company to be able to replicate. I didn't come across any exposés on child labor or exploited workforces but didn't dig exceptionally deep once it got passed the initial threshold.
HTH