Do book trailers sell books? Rarely on their own, and the honest data is thin. A trailer works less like a sales tool and more like a reusable marketing asset: it builds awareness, gives you ready-made video for social media and ads, and adds polish to your author pages. Direct, measurable sales are the exception, not the rule. But the little data that exists is more useful than a plain yes or no: it shows where a trailer does earn its keep, and that is worth two minutes before you spend money on one.
- What Does the Data Say About Book Trailers and Sales?
- Why Is It So Hard to Measure Whether a Trailer Sells Books?
- What Does a Book Trailer Do If It Doesn’t Sell Books Directly?
- Did BookTok Change Whether Book Trailers Work?
- When Does a Book Trailer Make Sense for a Self-Published Author?
- Frequently Asked Questions
What Does the Data Say About Book Trailers and Sales?
The small amount of research that exists points one way: a book trailer rarely causes a purchase by itself, but it can nudge a reader who was already interested. The most direct evidence remains a reader survey run by children’s book author and illustrator Debbie Ridpath Ohi in October 2012. Of the 104 people who responded, only 15.5% had ever bought a book solely because of a trailer. However, 45.2% said a trailer had partly influenced a purchase, usually when they were already on the fence about a book. And 59.6% believed trailers “sometimes” help sell books, depending on the trailer.
That survey is small, informal, and well over a decade old. Its age tells its own story, though. In the years since, no publisher, retailer, or research firm has published stronger evidence that trailers convert viewers into buyers, despite the whole industry having reasons to look for it.
People inside traditional publishing say much the same. Book publicist Kathleen Schmidt, who has run campaigns for major publishing houses, put it bluntly in her Publishing Confidential newsletter in 2024: trailers “are not going to attract consumers, though. They never have.” She adds that publishers increasingly question whether producing trailers justifies the cost without a marketing plan behind them.
Our own trailer work matches that pattern. Authors who commission a trailer expecting an immediate, visible sales bump usually come away disappointed. Authors who plan the trailer as content for channels they already run (a newsletter, an active social account, a launch event) consistently report it earned its place.
Why Is It So Hard to Measure Whether a Trailer Sells Books?
Retailers do not tell you what convinced each buyer, so no author can trace a sale back to a trailer view. Amazon KDP’s Orders Report, for example, shows the date, marketplace, format, and number of units ordered. It says nothing about where the buyer came from, and other stores report sales the same way. A reader might watch your trailer on Instagram on Tuesday and buy the ebook from their preferred store on Friday. Nothing connects those two events in any report you can see.
This measurement gap should make you skeptical of confident “conversion rate” claims for trailers. Most published numbers come from companies that sell trailer production, and there is no independent way to verify them. When authors ask how many sales their trailer generated, the only honest answer is that the retailer data cannot say.
What you can measure is everything up to the sale. Views and watch-through rate tell you whether the trailer holds attention. Clicks on a trackable link posted alongside the video tell you how many viewers moved toward your book page. A jump in newsletter sign-ups or follows in the days after you share it tells you the trailer reached new people. Those numbers cover the part of the journey a trailer actually controls.
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What Does a Book Trailer Do If It Doesn’t Sell Books Directly?
A book trailer earns its keep as a reusable video asset rather than a one-off advertisement. The clearest finding in Ohi’s survey was not about sales at all: respondents repeatedly said trailers made them aware that a book existed. Awareness is the first step every sale depends on, and it is the step a short video does well.
In practice, one trailer feeds many placements:
- Ad creative. A 15-to-60-second trailer slots directly into video ad formats on social platforms, which authors otherwise have to create from scratch.
- Email and launch content. It gives your newsletter something visual to open with and your launch announcement something to share.
- Author pages and websites. A pinned video post or a header video makes an author page feel established.
- Events. It plays on a loop at launch events, book fairs, and school visits while you talk to people.
Teachers and librarians deserve a special mention. The strongest positive reports in Ohi’s survey came from school librarians: one described showing 30-second trailers on a middle school morning news program that reached 1,000 students a day. Others said students line up to borrow a book after seeing its trailer. For children’s and YA authors, trailers do quiet work in classrooms and libraries that never appears in a sales dashboard.
The trailers that stay in use longest, in our experience, are the ones planned for reuse from the start. An author who requests a 30-second vertical cut alongside the main 16:9 trailer ends up with clips for Reels, Shorts, ads, and email, all from the same footage.
Did BookTok Change Whether Book Trailers Work?
Yes, in an unexpected direction. Short, personal, vertical video now reaches more readers than polished cinematic trailers, and it has sold books at a scale trailers never approached. The New York Times reported, citing BookScan data, that BookTok (TikTok’s community of readers) helped authors sell 20 million printed books in 2021. That is the strongest evidence anywhere that video sells books. The catch: almost none of that video was a traditional trailer. It was readers talking into a phone camera about books they loved.
The lesson is about format and voice, not video itself. A produced trailer is controlled, evergreen, and reusable across every channel. It represents the book, in exactly the way you choose, without requiring you on screen. A talking-to-camera video is inexpensive, personal, and favored by short-form algorithms. It represents you, and it asks you to appear on camera regularly. The two do different jobs, and they are not rivals: many authors use the trailer as the anchor asset and short personal videos as the steady drumbeat. Writer and Wired founder Kevin Kelly makes the same point about the wider backdrop: audiences have become “people of the screen,” giving moving images far more attention than text, which is why some form of video usually earns a place in a launch even when a produced trailer is not what closes the sale.
Traditional publishers have adjusted the same way. Schmidt notes that a standard trailer now competes with millions of more entertaining videos on TikTok and Instagram Reels. A trailer posted to YouTube without a promotion plan, she adds, simply sits there. Publishers still commission trailers, but selectively, for genres such as romance where an engaged audience will actually watch them.
When Does a Book Trailer Make Sense for a Self-Published Author?
A trailer makes the most sense when you already have somewhere to put it and someone to show it to. Schmidt’s assessment cuts both ways here: she calls trailers good branding tools to share with an existing audience. If you have a mailing list, an active social account, or regular events, a trailer gives those channels something fresh. If you have none of those yet, the audience-building has to come first, because the trailer cannot find viewers on its own.
Genre and format matter too. Children’s and illustrated books get unusual mileage because pages from the book itself can carry the video, and because schools and libraries actively use trailers. Visually rich fiction (fantasy, romance, thrillers) suits the format’s mood-setting strengths. Non-fiction has its own quirk. The one respondent in Ohi’s survey who described buying a book purely because of its trailer bought a quilting book, because the trailer showed interior pages she could not find anywhere else. A trailer that shows what is inside the book does real selling work for non-fiction and picture books alike.
Where a trailer makes less sense is as a stand-alone sales bet. If the plan is to post it once on YouTube and wait, the data above says to save the money. The trailer is the asset; the plan around it is what gives the asset a job.
If you decide a trailer fits your book, the production questions have their own guides on this site: the different types of book trailers and what each style involves, and how long a trailer should be for each platform. And separately from the question this post has answered, once a trailer exists, we have covered where to share a book trailer so it reaches the readers you already have. And if you would rather hand the production itself to someone, our book video trailer service shows what we make and what it costs.
Frequently Asked Questions
Do book trailers actually sell books?
Rarely on their own. In the most-cited reader survey on the question, 15.5% of readers had bought a book solely because of a trailer, while 45.2% said a trailer partly influenced a purchase they were already considering. Trailers support sales; they seldom cause them.
What makes a book trailer effective?
Readers are consistent about this: an effective trailer accurately matches the mood of the book, stays short (30 to 90 seconds), looks professional, and does not give the story away. Misleading, overlong, or amateurish trailers actively put readers off the book.
How can I tell if my book trailer is working?
You cannot count sales from it, because retailers do not report what led to each purchase. Track views, watch-through rate, and clicks on the trackable link you post alongside the trailer instead. Those show whether the video holds attention and moves viewers toward your book page.
How much does a book trailer cost?
Anywhere from nearly free, using DIY slideshow and video tools, to several thousand dollars for cinematic live-action production. Match the spend to the trailer’s realistic job: it is a reusable marketing asset, not a sales machine, so it should fit a budget you can justify as brand-building.
Do traditional publishers still make book trailers?
Yes, but selectively. Publishers increasingly question the return on trailer spending and reserve trailers for genres with engaged video audiences, such as romance, while moving other budgets toward short-form video and marketing that reaches readers more directly.
A book trailer will not sell your book by itself, and nothing in the available data suggests otherwise. Treat it as one reusable asset inside a marketing plan you already run: show it to the audience you have, cut it for the platforms readers actually use, and measure clicks rather than hoping for sales you cannot trace. Decide what job the video will do before you spend money making it.
