Re: Sell the packaging!
Unfortunately you'll find that you can get decent money for the empty box that contained the nice shiny (normally phone) that you've just bought.
The unfortunate bit is that the scumbag buying it is planning to fill it with the shiny belonging to someone else by illegal means. This makes it much easier for them to sell it on fleaBay. The £10-20 they pay you for the empty box gets them an extra £40-50 on the sale price.
But, of course, fleaBay isn't going to stop such a clearly dodgy practice because they get their cut of the £10-20 and also of the £40-50 from the sales.