I have initiated these types of requests. I also receive these types of requests. Some I accept. Others I don't. It depends mainly on whether I want the offered book.
I was honored by the request of Dr. Josh Rasmussen to exchange a copy of his book, How Reason Can Lead to God: A Philosopher's Bridge to Faith, for a copy of my book, The Case against Miracles. But I declined the offer. I really have no interest in his book. Here is how that pleasant exchange took place:
I was honored by the request of Dr. Josh Rasmussen to exchange a copy of his book, How Reason Can Lead to God: A Philosopher's Bridge to Faith, for a copy of my book, The Case against Miracles. But I declined the offer. I really have no interest in his book. Here is how that pleasant exchange took place: