Why would you drive miles with a piece of kit bouncing about and getting scratched in the boot etc without its packaging, is mind bogling espcially when the retailer could claim the purchaser did the damage themselfs (causing the fault).
Now see this; http://www.dicksmith.co.nz/our-returns-policy
doesnt mention anything about returning products with original packaging (Which quite a few retailers state in their returns policy). Id say some numpty at DSE forgot to write this in and now the store workers have to deal with returns without the original packaging. Thats attention to detail for ya !
That is, only if you purchase a product expecting it to be faulty or develop a fault during the warranty period.
I think you will find that the original box criteria is for when you return a product because you have changed your mind, not for fault products. Are people really expected to keep boxes and original packaging for the length of the warranty period? What about when a brand new refrigerator or bed is delivered and the company takes the packaging with them? Or where is one meant to store a refrigerator box for a year or however long?