Case Study 4.2: Stocking closets An example of VMI is the, about 100, closets in the Gasunie building which are filled with office supplies (markers, paperclips, pens etc.). The traditional way of keeping these closets filled was to tell the supplier exactly what you needed every time, the supplier would then fill the closets with these products. This was not the most efficient way, since the supplier is the expert, so something had to change. It was decided that the new way of doing business with the supplier was according to best-value procurement. This meant that the procurement department of Gasunie agreed with the supplier to: "keep the closets filled". By doing this, instead of giving a list with items they need and to do it in a certain way, but letting the supplier do it their way, the price went down by 40% . The only thing left to do now is checking whether the supplier lives up to the agreement, i.e. are all closets really filled