Another suggestion based on other people's input in another thread.
Packing:
Americans, Australians and perhaps some other people too seem to be obsessive about packing (lots of filling and very strong boxes). Whether it is justified or not, even if it seems wasteful, it would greatly improve the image of the product if the kits were shipped in a double box (a strong box inside another strong box) ready to survive a drop down the Exorcist stairs