That seems to be variable. When I received my 2008 Macbook from Amazon, the Apple box was in a larger Amazon cardboard box along with just one sheet of packing paper, which was simply placed in the box. In other words, no padding at all and the Apple box was free to careen around inside the larger box.
I just ordered a Speck hard case, Moshi Palm Guard, and some batteries from them about a month ago. Again, items just "loose" inside a much larger box. Granted, these were not as fragile as a computer, but still it was sloppy.
I'm not challenging your experience at all; just saying that it does not seem to be consistent.
MT