I received the Mac Pro about a week ago, and it works well. I wish they had packaged it a bit better, as it just had a couple of plastic bubbles inside the box, and it could still move around quite a bit. There is no damage to the outside, and hopefully, there is none to the inside.
I did, however, receive the wrong item, though I'm not complaining. They sent me a Mac Pro with a 2.7 GHz processor, D700 graphics cards, and 64GB of RAM, which I purchased one with a 3.5 GHz processor, D500 graphics cards, and 16GB of RAM since I had RAM to upgrade it. Not that bad of a trade-off to get better graphics cards for a slower processor, given my type of work, so I'm pretty happy.
Overall, a good buy at one heck of a good price!