I am surprised AZ Gardens is still in business. I wonder how the hell almost everything they ship dies, is dying, or dies shortly after. Plus they seem to have a habit of sending fish not ordered or not sending fish ordered and then not refunding. I bet these guys buy from their LFS and they don't even purge the fish and probably don't package properly either. Also would explain the yellow and brown plants they are notorious for shipping. That is exactly how they are at most LFS. It makes no sense that fish shipped overnight have a high DOA rate. If they are prepped properly before shipment and packaged right they should almost always arrive alive. Overnight shipping you drop them off right before USPS closing, they are put on a plane, and to your door usually in the morning. Realistically it is only like around 14-18 hours at most the fish are in transit.
Sorry to anyone that has dealt with these guys, like I said, I am surprised they are still in business. They don't know what they heck they are doing, poor customer service, over charge people, keep extra money etc. Unbelievable.