It doesn't really matter if the item being shipped is large or small...small items can be damaged through mistreatment and well as large items. Packing should always be done as though the item will face a worst case scenario.
I think it is also critical to remember that shipping companies and their insurers often demand a LOT of information and documentation. Photos and sometimes videos of the item being packed, the item actually working, all surfaces, etc. Some even insist on new boxes, usually double boxing and often with 2" or more of specific cushioning between boxes.
If you read the fine print, it is daunting. When there is shipping involved, there is usually risk and most of the risk goes to the buyer....and if you aren't willing to take the risk, even though the problem may not be your fault, then you should not get involved in transactions that involve shipping.

