I bought a few harlequins new line of book called  Kiss ,  and they have coupons for more books in the back so I was wondering if I cut them very carefully out are they still postable ?

Yes. If you are talking about those insert cards on heavy paper in the middle of the book, those can be missing and the book is still postable.

If you are talking about those book order forms that publishers like to stick in the back of books, those can also be missing and the book remains postable, as those pages are not "text" pages.

Just do it neatly, and there should be no questions.

I would take the whole page out and no one should even miss them. Leave a hole in the page where you took the coupon out and it may prompt someone to think it's a bad thing.

okay thanks. Thats what I was thinking , if I just cut out the coupon it would draw attention to it. So I'll take the whole page out. Because it is not a text page.