Suppliers' pricing decisions are influenced by both internal and external factors. Internal include cost of production, overheads, and lifecycle stage. External include competition (market dynamics, alternatives available) and customer perception of value (willingness to pay, brand image). These external elements are beyond supplier control but crucial in determining market price levels. Recognising these allows buyers to assess supplier pricing flexibility and to negotiate based on market realities rather than supplier cost claims.
Reference: CIPS L4M5 (2nd ed.), LO 1.2 - Internal vs external pricing factors in commercial negotiation.