I got a 4 driver motor sent in a ratty looking box that was big enough for a large cake with candles, but only a ¼ to ⅓ filled with peanuts. It was fine, but the packing was a laugh. Not too much else has gone "wrong" for me really.
You need to send the seller a link to TCA site's section on box grading.
Or that may have even been the root of twisted thought, since item and box are graded individually.
I worked in shipping and receiving. It was amazing how some folks packed things. I've received boxes stuffed so neither end closed. Flaps were wrapped over the loads (usallly mounds and mounds of paperwork) and held shut tight with a half a rolls worth of loops of tape. The end result was anywhere from a giant square-ish muffin in a "cellophane bow", to a square football if they really pushed their luck ,wrapped both ends and used a side as the bottom.
These were some ultra cheap, depresion influenced, old time sales folks. The multi millionaire founder still scrounged paper clips and rubberbands from the streets around the offices as he inspected the building outside and walked around the block before dumping them in the mail box as he went home every day 
Took me a year to figure out where they came from!
