Purchase orders are accepted from US schools, universities and government agencies placing orders of $200 or more. We do not accept purchase orders less than $50 and for purchase orders less than $200 there is a $20 processing fee. To place a purchase order, please request a quote using the form at https://www.setcas.online/contact-us. We will send you a quote to your email address you provided in the form. This quote can be saved as a PDF and used by your institution to create an official purchase order. Once you have an official purchase order, please place the items into your cart and proceed to checkout, selecting “Offline Payment” as the payment option. After you place your order online, please send your official purchase order along with your order number to info@setcas.us If you need a W9 please email info@setcas.us. This is the fastest way to get your PO processed and will reduce errors and delays! After your order ships, Setcas will send an invoice referencing your institution's PO number to the provided billing address (or directly to your institution's Accounts Payable department if we have a contact on file). This invoice can be paid by credit card, check, or bank transfer (non-US customers only). Payment terms are net 30 days from the invoice date.