If you are buying a machine you may want to before purchase request a machinery valuation from the seller or have one done for yourself. This is a great way to make sure that the product is very valuable to you and is at the price that you want to pay and that no one is trying to sell you a lesser value machine for more money.  This can be a quick easy search online that you can find a lot of information on.  You can even find information on different businesses that will complete this Plant and Machinery Valuer for you. When doing this search for yourself make sure that you carry a copy with you to the seller that is selling the machine or machinery.