Fill out the form at the bottom of this page completely. If our purchasing team is interested, they will reach out to you.We'll help you craft the best vendor contract agreement for your specific needs, and help you manage that relationship as long as you need it. Learn how to conduct business with us through Coupa, Clark's procure-to-pay system for purchase orders, invoice processing, and payments. Know about: Information required before drafting the agreement; Essential clauses that need to be covered in an ecommerce vendor agreement. If you do not agree to all the terms and conditions of this agreement, then you may not access the website or use any services. Clark Construction Group and its associated companies use the Coupa Supplier Portal (Coupa) to manage transactions with its suppliers. We only have about 500 direct wine seller permittees. I have 20 years of experience building successful, large scale ecommerce companies. Every dispute of any kind or nature between EKPC, Owen and.