What I’ve Learned From Selling 500,000 Books
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What I’ve Learned From Selling 500,000 Books
BY Tiago Forte
PUBLISHED<br>June 15, 2026
UPDATED<br>June 15, 2026
Est. reading time: 19 min
I recently reached an incredible milestone – 500,000 books sold across 8 titles.<br>That includes 5 self-published Kindle ebooks, 1 co-authored book, and 2 traditionally published books, all released from 2017 to 2023. Here’s the breakdown of how those sales were distributed:
Almost every single thing I believed about bookwriting when I started turned out to be wrong. Let me share the most surprising, counterintuitive, and hard-won lessons I’ve gained from this journey.<br>A bestselling book is a terrible business on its own<br>My most successful book by far, Building a Second Brain (BASB), has achieved the highest heights of publishing success – over 400,000 copies sold.<br>You’d think such a breakout hit would have led to financial riches, but that wasn’t the case at first. Two years after release, in July 2024, I had yet to break even on the overall investment.<br>The reason is the enormous spending involved in creating the book and bringing it to market: $1.1 million in total. That included about $560,000 in team costs, $140,000 on a PR agency, $125,000 on an editor, $40,000 on design, $25,000 on the website, $15,000 on the launch party, and $12,000 for several writing retreats.<br>Those costs were offset by book advances totaling $498,000, plus another $486,000 in course referrals, adding up to $984,000 in total book-related revenue and thus a $146,000 shortfall. That shortfall was covered a few months later in October 2024, about two years and four months after publication.<br>I always like to mention these costs when talking to other authors, because they highlight that this book wasn’t a lucky, serendipitous hit. It was the product of years of tremendous effort and seven figures of investment.<br>That’s what it takes to build the team and the systems, produce all the supporting assets, manage all the partnerships, get hundreds of people involved across a vast retail supply chain, all to be able to say “wherever books are sold.”<br>Yet despite this outlier success, I can’t say that selling books in itself is a good business model. To merely break even on an endeavor that consumed many years of my life doesn’t bode well for the financial life of authors in this day and age.<br>A book is a global self-funding marketing campaign<br>I’ve come to think of books not as a product in their own right, but as global self-funding marketing campaigns.<br>Let’s take the example of a book that sells 100,000 copies – very successful, but not extraordinarily so. Imagine for a minute how much money it would cost to reach 100,000 people via a traditional marketing campaign.<br>And I don’t mean reaching them with an ad impression lasting a few seconds. The average reader is dedicating hours of deep, voluntary attention to your message. They are immersing themselves in the world you’ve created, in an extremely high-trust context, with the explicit intent of changing their thinking and behavior.<br>Such deep engagement isn’t possible through any other means, but at a minimum, it would cost millions of dollars. And that reach would end the minute you stop paying.<br>With Building a Second Brain, I’ve paid $2.70 to date for each new reader relationship formed, and that number keeps going down as the asset compounds over the years. Compare that to a ballpark cost of $40–60 per impression on broadcast television or a premiere streaming platform.<br>These would be remarkable numbers for any marketing campaign, but also take into account that the whole thing is self-funding. Not only are you reaching people at a deep level for pennies, but they are spending their own hard-earned money to do so. This is the only form of marketing that contains its own revenue-generating mechanism.<br>But all this raises the question – if a book is a global marketing campaign, then what is it promoting?<br>You could scarcely imagine Gucci, Toyota, or Coca-Cola running a major campaign without a product to sell. The same is true for books: without an associated product on offer, the book itself makes no financial sense, even if it succeeds.<br>This leads to the longstanding observation that traditionally published books require a product or service “on the backend.” You have many options: it could be speaking gigs, consulting, coaching, a community, courses, or even a physical product.<br>In my case, taking course sales into account flips the profitability equation on its head, from merely breaking even to a $1.3 million gain (considering that 34% of our customers find us through books).<br>The question therefore isn’t “How much will my book make?” (probably not much at all). The real question is “What do I want people to do once I have their attention?” That is where the true profitability lies, and therefore the viability of any author’s career.<br>The book is not the main asset you’re creating. It’s just a...