I used Kanacca! I ordered three bridesmaid dresses from Kanaaca in September for my PV wedding. They took 2 months to get here, but I think that was because they knew that my wedding isn't until March, so no rush, right? The communication with them was a little difficult- language barrier as they are based in Shanghai. But, the dresses came in and they are...interesting. ;-)
All of my girls went and had their measurements done (And Kanaaca wants all kinds of weird measurements that we had never heard of) and I got to pick the color of the dress out of about 60 or more colors they have..So, that part was nice. The dresses, however, are a much thicker material, almost like a heavy curtain material, than I had expected. The dresses look much more flowy and light in the picture.. And all of the girls have to get the dresses tailored. It was actually quite comedic when my bridesmaids were trying them on. We were all rolling with laughter on the floor. One girl had some weird pouch thing in the stomach area of her dress (As if she were pregnant or something)...one girls arm holes were soooo small she could barely get her arms through them...and the other girl had a very weird stitching down the side of her dress that made it look like she had some sort of weird tail or something... Anyways, the dresses were $69 each and the alterations will probably be $50 or so... So, we aren't saving as much as we anticipated in the long run..
Luckily, my wedding isn't real formal or real big, and my girls don't really care what they wear, so it will be fine. But, I definitely think they either have kids making these clothes, or someone was drunk when making our dresses. ;-)
I wouldn't say you shouldn't use Kanaaca, because on ebay they have great feedback and lots of women order wedding gowns from them...maybe it was just the dress I picked? I will try to find it and attach a link or something so you can see- it was a very simple, plain design, or so I thought.