This is an interesting thread. I'm getting back into the hobby, and always ordered from Live Aquaria with good results, I can't remember any DOA fish. I recently ordered 4 fish, a fairy wrasse and 3 Vanderbilt chromis. The wrasse wasn't quite DOA, but was motionless until poked. By the seconds morning after they arrived, three of the four were dead. I only reported the wrasse, which they credited.
It seems that in addition to the wrasse, the chromis are also not robust to shipping.
We decided to give them one more try, have an order coming with a different wrasse and two chromis to complete the trio. But if these don't arrive healthy and 100% make it through QT, Live Aquaria is off my list forever.