View the list of Sample Business Letters Return of Purchase Order and Request for Advance Payment Disclaimer: Be aware that some of these sample letters have legal, financial, or other implications. If you are not sure about the use of any letter, consult with an appropriate professional first. Return of Purchase Order and Request for Advance Payment Dear Your purchase order has been referred to me. I note that the third item on the order is 50,000 of our Model 310 American Flags at a price of $13.10 each. While we appreciate an order of this size, the terms and conditions on page 233 of our catalog clearly specify that overseas orders are accepted with full payment in advance, and with an amount sufficient to cover shipping. We are therefore returning your purchase order. Please resubmit your order with either a sight draft, or an irrevocable letter of credit. We anticipate shipping charges to be in the neigborhood of $1.00 U.S. per flag ordered. Thank you for your order. We look forward to serving you in the near future.