I have so many bikes/frames come to the shop that are so haphazardly packed, it makes me wince in pain. Bikes thrown in a box with no padding, securing, or care. Wheels that are placed so that the axles are against frame tubes, handle bars and controls hanging by their cables...often there is more damage when they arrive than when shipped. Ever try collecting on shipping insurance? Good luck.
So, I've refined my packing through the years to protect both your monetary investment and my work. All work leaving the shop gets triple wrapped in bubble wrap, secured to a piece of padded cardboard, then tucked into a frame box with lots of space filling packing material. Additional components are wrapped in bubbles, surrounded in cardboard, then secured in place so they do not move during shipping, limiting the probability that they will strike cherished merchandise.
I've had a few customers complain that it took them over an hour to unpack their frame. You know what, that's just fine by me :)