Call to inquire about the price of materials. How to say it's easier to find out the real price?

You can ask a few more companies first, and generally ask three companies to know the approximate price. When you ask, you can say that you are the person in charge of the purchasing department, and you have a large order at a time. Usually you tell the seller that he will be cheaper than the quotation, and then you can know the approximate price by combining several quotations. Sometimes, you can lower the price appropriately and fix them up. Just ask a few more questions and compare them with each other, and it should not be difficult to find out the real price.