When a dealer spares bill drops through the door it always seems to hold some sort of surprise. More often than not there’s a sharp intake of breath followed by a loud cry of something along the lines of “how much?”. But certain items can be unexpectedly cheap. It often seems there’s no rhyme nor reason to how these numbers are generated by the multinational machinery makers. Clearly they’re all out to make a healthy profit but they also need to remain competitive with their main rivals.