My first shipment was never delivered (USPS was very uncooperative then they blamed it on me) but they made good and the second shipment arrived with all shrimp in good shape. A lot of variability: size and amount of whiteness. Love it.
They're in my tank now and so far hiding mostly.
Many thanks to Amanda from shipping for the trouble and the suggestions on how to lower my pH, which I think will result in a successful acclimation. Couldn't ask for more from them. (For the pic, look in the foreground and inside the breeding box which is hanging inside my tank.)