This is the complete guide to annual vendor negotiations (AVNs) with Amazon. Learn how to prepare and negotiate your 1P trading terms.Write the contract in six steps Start with a contract template. Open with the basic information. This blog will break down the terminology vendors will encounter and some tips for getting the best out of your negotiations for your Amazon vendor agreement. The guide reviews the pros and cons of Amazons Vendor model, how to grow your eCommerce business with it and the diffeneces of closed Amazon Vendor Express. Once you have a vendor central account with Amazon is their standard agreements. One of the first items of business. Once you have a vendor central account with Amazon is their standard agreements. Amazon Vendor Agreements include various provisions and allowances that help facilitate a smooth business relationship between Amazon and its vendors.