Haha, that's true. Very convenient to shop on Taobao. Because of this, I have never used Aliexpress. That's why I've never heard of some of the very famous Chinese brand names here.I guess you can also read Chinese? You can talk with LZ directly through Taobao.
A2S is a great deal. I've posted a comparison between it and A2 on the A2 thread, explaining why it may even be better than A2. Take a look if you're interested in it.
In fact, I now use A2S more often than A3. Great sound, very affordable, convenient, and most importantly for me having a normal IEM shape.