You must be a solution for your company. This makes you more relevant. Working in the procurement department helps you to understand the financial state of the company and one can advise on the best course of action.
Most suppliers give do not give the prices for their quotations. They give a cheap quotation to get tenders, not bearing in mind the procurement agency wants the best. They put themselves in the shoe of the buyer and fail to give the correct status of a procurement quote.