I was desparately in need of a decent abaya after giving all of mine away last year. I saw this recent post by NoortheNinjabi about her obsession with abaya shopping, so I decided to trust her opinion. I placed an order for this abaya from East Essence.
As for the sizing and quality, I am really impressed with both. I ordered the longest standard length, which is a 57. My only complaint is that the sleeves could be a tad longer, but I have ridiculously long skinny arms. I think they use standard size charts, so if you know your measurements it will be a really accurate fit. Pre-made garments usually fit me really well because I am about 5'6"/7 (170cm) and thin with a small chest and hips. If you look at their size chart before ordering you can decide whether you want a looser fit based on the size as well as if you need a custom length.
I wore it out today (in the rain too) and was really happy with the fabric. It is pretty light, but not stiff like some lower cost abayas that I have owned. It was comparable to some that I had bought at Somali shops for around $40, but I think this one has nicer detail stitching. It also has buttons at the top where the top layer closes. They don't allow it to be opened all the way for nursing, but it could be easily altered on the underneath layer. I think the snaps are there so that if the fabric is pulled it will unsnap rather than rip at the seam.
It also came with a hijab to match the tan layer of the abaya. It has the same black thread stitching going around 2 sides. I think it was also a good deal for $7. I plan on ordering from them again in the future for sure. I would even love to open a little place and sell them, but I don't think we have the collateral for something like that at the moment.
Let me know if anyone else decides to order from them and how your experience goes!