Your book back matter links outlive the launch by years, and most of them point at a page you cannot fix. The “also by” list, the “get the next one” button, the newsletter nudge on the last page: a reader hits those long after release week, often long after you have moved on to the next book. If that link is a raw Amazon URL, you have handed the most patient reader you will ever get to a page you do not control.
Retailer links rot, and you cannot recall the book
A retailer URL is only stable until the listing changes. Re-upload the file, change the ASIN, swap editions, merge a paperback and ebook listing that drifted apart, and the link a reader taps can land on a dead page or a “currently unavailable” notice.
The part that makes this expensive is that you cannot recall the copies. Every ebook already sitting on someone’s Kindle, every paperback already on a shelf, carries the link you put in it the day you uploaded. You can fix the next upload. You cannot fix the copies already in circulation. So the reader who finishes book one eighteen months from now, in the exact moment they are ready to buy book two, taps through and hits nothing. That is the single most qualified reader in your whole funnel, and you lost them to a URL that expired.
Point your book back matter links at a page you own
The fix is one page on your own website, and every link in your back matter points at it instead of at the store.
A page you own has one URL that never changes. When your listing moves, you update the page once, and every book you have ever sold now points at the right place without you touching a single file. A new edition, a new retailer, a re-uploaded or merged listing: the reader always lands somewhere live, because the thing they are tapping is yours.
Print is where this matters most, because a printed page is the one thing you genuinely cannot edit after the fact. A paperback with a live store link baked into the back is a slow leak you will never find and never fix. A paperback that points at a page on your own site is a leak you seal in five minutes, years later, from your laptop, for every copy at once. Same URL in the file, different outcome entirely.
This is the same logic as owning your newsletter instead of renting an audience on a platform that can change the rules overnight. If Amazon reshuffles something tomorrow, your printed books still work, because they point home first. It is the wider own-your-platform case I make in my post on selling books direct.
What your own page can do that a retailer page cannot
A store listing gives you one job: sell that one book on that one store. A page you own can do more in the same tap.
It can carry an email signup, so the reader who just finished the book and wants more joins your list right there, at the warmest possible moment. That is how a back-matter link quietly builds an author newsletter you actually own. It can carry a Meta pixel, so you can build an audience out of the people who read all the way to the last page, which is about the best group you will ever advertise to. A pixel does mean putting a privacy policy and a cookie notice on the site, which is the small print of owning the page. And it can hold the kind of plain, structured content that the tools readers increasingly use to find their next book can actually read, which a locked retailer page will never show. (More on that in my post on AEO for authors.)
You can list every retailer on it too, so the reader buys wherever they already have an account instead of being forced onto one store. A universal buy link gets you most of the way there, and it beats a raw Amazon URL, but a page you own still wins, because you can pixel it, measure it, and change it. My post on book buy links walks through how to set that up.
Keep the page simple enough that nobody has to think
The one way this goes wrong is building a page the reader has to work at. If someone finishes your book, taps through, and lands on a cluttered page where the next book is three scrolls down, they drop off. They were ready, and you made them hunt.
So keep it boring. The next book, the buy options, the signup, and nothing competing for the tap. This is back matter, not your whole website. It has one job: catch a reader at the exact moment they want more and send them onward before the moment passes. What actually belongs in the back of the book, and in what order, is its own decision, and I covered that in my post on book back matter.
Go look at the back of your most recent release right now. If the link points at a store, change your book back matter links to a page you own before your next upload, because that is the one copy you can still fix. Everything already sold is stuck with whatever you chose the day you hit publish.