I have been shopping with Yesstyle AU for over a year now, before that I was on Jollychic but found their prices a lill too high, so swapped to Yesstyle... I haven't had a problem.
Occasionally they run out of stock and I have to wait for new stock, but if there is a problem with stock, they let me know and ask if I want to cancel the order or not. Usually if I am a little more patient the stock comes in. I always pay for expedited shipping and I get a tracking code.
Once I had a product that was broken, and the Yes Style team fixed me right up. Crediting me back the money, and I didn't have to go to the trouble of sending broken product back, even though I told them it was easily fixable, they still credited me the full price of the item back.
Great site, oh and they only charge you for the product after it's been shipped.