An invoice provided by a seller before the shipment of product, informing the buyer of the types and amounts of products to be shipped, their price, and essential specifications …
An offer to sell products with specified cost and under particular condition
The least amount of order which the seller can accept as he/she states on the listing. this subject is mostly negotiable.
The seller sends a document to the customer which contains the agreed terms like approving product order, quantity, shipping cost, etc.
The price of an item which the customer will pay and generally it is excluding the shipping cost.