The four types of relationships between buyers and sellers are transactional, functional, affiliative, and strategic.
The Personal Service Agreement (often referred to as a PSA or Form CO-802A) is a contract designed for simple transactions that do not require the participation of a Purchasing Agent to assist with sourcing and with the settlement of business terms.
Elements of a sales agreement Buyer and seller names and contact information. Description of goods, services, or property being purchased. Payment amount, dates, and method. Liability of each party in the case of loss, damage, or delivery failure. Ownership information, such as when ownership formally transfers to the buyer.
Application of A.P. and G.P.: An Arithmetic Progression (AP) is a set of terms in which the differences between each term are the same. Each successive term in a Geometric Progression (GP) is obtained by multiplying the common ratio by the preceding term.