I do worry about items that come from tzedaka campaigns – am I obligated to pay for the book – even if I didn’t want it, and my budget doesn’t include books.
(b) Any merchandise mailed in violation of subsection (a) of this section, or within the exceptions contained therein, may be treated as a gift by the recipient, who shall have the right to retain, use, discard, or dispose of it in any manner he sees fit without any obligation whatsoever to the sender. All such merchandise shall have attached to it a clear and conspicuous statement informing the recipient that he may treat the merchandise as a gift to him and has the right to retain, use, discard, or dispose of it in any manner he sees fit without any obligation whatsoever to the sender.