Before we begin, it's worth considering a couple of important points. The market for used and second hand goods is massive. There are good reasons for this. The most obvious one is, of course, cost.
Whether it's a car, a laptop, or indeed a handbag, the cost of a second hand item compared to the very latest model can be staggering. It's not uncommon to find a used model up to 70% cheaper than a brand new version.