Under payment method, choose "Purchase Order'. You will be required to enter your P.O. #. THIS OPTION IS AVAILABLE ONLY TO CUSTOMERS THAT HAVE AN OPEN TERMS ACCOUNT WITH ROBERTSON. If your organization desires to purchase under this approach, please contact info@robertsonlighting.com with this request. We will quickly complete a review of your request, often within several hours of your request. For any orders that are under $1,500, these are required to be paid by credit card unless your organization is specifically excluded from this limitation. You can still enter your P.O. # as a point of reference for your records when paying by credit card.