The other element that is important is the issue of pricing, the buyer is often driven to purchase at lower prices and therefore use the element of pricing in determining the direction of the contract. The seller on the other hand is driven to the urge to sell at higher prices to obtain higher profits. This conflict tends to disregard the element of fair dealing between the two parties, it is therefore important the two parties be guided by standard prices in the market rather than individual prices that may affect the life of the contract.
The issue of selecting suppliers on the buyers side, they are guided by elements of quality and neglecting other issues such as experience of the supplier in the given field. Price and quality are issues that pertain to convenience, however for long term supply contracts benefits it is important experience of the vendor should be taken into consideration.