The key to working with a contract stationer is to identify the set of supplies you most frequently purchase. By including and accurate listing of these items, you can minimize the frequency of paying higher amounts for items not on your negotiated price list. In addition to securing pricing for your most often purchased items, you should seek to guarantee the prices for other items. In particular, nonessential office supplies such as shipping materials or computer accessories may not be competitively priced. Consider warehouse clubs.
Warehouse clubs are a good option for discount pricing on common office supplies.
The greatest drawback is that warehouse clubs tend to have a very limited and varied selection. Only ask for services that you need. When working with a contract stationer, ask only for the services that will help you business function more efficiently. In the end, they won't be. Reports can be useful in monitoring costs.