Second hand units are obviously considerably cheaper than new ones, however many of them are sold for a reason. That’s not to say that you shouldn’t buy them, just beware!
Remember, there are legal requirements for trailers and for the way they are kitted out, and it will need to pass a gas and electrical inspection before you can operate. Many second hand trailers will require a significant amount of work to bring them to a standard where they are legally compliant.
That said, for many people a second hand unit is an excellent way to set up their business on a budget, and you can find many units in our Buy / Sell section of this website. You’ll also find some handy buying and selling guides