Business English: A Practice Book by Rose Buhlig

2. You have not responded. The _Modern Magazine_ feels

that you could not have understood its offer. These are no cheap books. To prove this, the firm is willing to send you the books to allow you to examine them before you send any money. If you accept them, pay the express agent; if not, return the books at the expense of the _Modern Magazine_. Remember that this offer expires ---- (date).