Every time we run a promotion that includes free shipping, someone on our team does the math and sighs audibly. I understand the sigh. The numbers are not, by any conventional accounting standard, encouraging. But I keep running the promotions anyway, and I want to explain why, because the real economics of free shipping in independent publishing are more complicated, more interesting, and honestly more hopeful than most people realize.

Let’s start with what it actually costs to mail a book. A single trade paperback, the kind of book we mostly publish at ScrollWorks, weighs somewhere between 10 and 16 ounces depending on page count and paper stock. Shipping it via USPS Media Mail, which is the cheapest option available for books, costs between $3.50 and $5.00 within the continental United States. Priority Mail runs $8 to $12. UPS and FedEx are even more expensive. If you’re a reader in Alaska or Hawaii, add a couple more dollars. International shipping is a whole different conversation, and not a cheerful one.

For a book that retails at $16.95, that shipping cost represents between 20 and 30 percent of the sale price. For a small publisher selling direct, where margins are already tight, absorbing that cost is genuinely painful. It’s not a rounding error. It’s a significant chunk of the revenue from each sale, and at our volume, it adds up to a number that makes the accounting software look a little red around the edges.

So why do we do it?

The short answer is that Amazon trained everyone to expect it, and fighting consumer expectations is a war you can’t win. But the longer answer is more nuanced, and it has to do with the particular psychology of how people buy books and the specific economics of direct-to-reader sales.

Let me walk through this step by step, because I think it reveals something important about the current state of book retail.

Amazon offers free shipping on book orders over $35 (or on any order for Prime members, who pay $139 a year for the privilege). This has effectively set the baseline expectation for online book purchases. When a reader goes to buy a book from our website and sees a $5 shipping charge added at checkout, they’re not comparing that to the actual cost of postage. They’re comparing it to the zero they’d pay on Amazon. And in that comparison, we lose. Every time.

The data backs this up unambiguously. A 2022 study by the Baymard Institute found that 48 percent of online shoppers abandon their cart because of unexpected shipping costs. Not because the total price was too high, but specifically because of the shock of seeing the shipping charge appear. Another study, this one from Digital Commerce 360, found that free shipping is the single most influential factor in online purchase decisions, outranking even price discounts. People will pay more for a product if the shipping is free than they will for a cheaper product with a visible shipping charge. This is not rational behavior. It’s deeply human behavior, and any business that ignores it is choosing principle over reality.

We tested this on our own site. For three months in early 2023, we ran an A/B test. Half our visitors saw a flat $4.99 shipping fee. The other half saw free shipping on orders over $30. The free shipping group converted at nearly double the rate of the paid shipping group, and their average order value was 40 percent higher. They were buying two books instead of one, specifically to reach the free shipping threshold. The math was clear: even though we were eating the shipping cost, the increased volume and order size more than compensated.

This is, I should note, exactly the dynamic that Amazon exploited to build its dominance. The $35 minimum for free shipping isn’t just a cost-saving measure for Amazon. It’s a behavioral nudge that encourages customers to add items to their cart. Amazon can afford to lose money on shipping because it makes it up on volume and because books are, for Amazon, primarily a traffic driver rather than a profit center. They sell books to get you into the ecosystem, where you’ll eventually buy batteries and dog food and streaming subscriptions.

We obviously can’t compete with Amazon on that basis. We sell books. That’s what we do. But we can learn from the behavioral insight, which is that free shipping isn’t really about shipping at all. It’s about removing friction from the purchase decision. Every additional step between “I want this book” and “I own this book” is an opportunity for the customer to change their mind. Shipping costs are the biggest friction point in online retail, and eliminating them keeps the momentum going from desire to purchase.

Now, someone at this point always asks: “Why not just raise your book prices by $4 and offer free shipping?” It’s a fair question, and it’s exactly what many retailers do. The problem in book publishing is that books have standard retail prices that are printed on the cover. You can’t easily sell a $16.95 book for $20.95 without it being immediately obvious that the price has been inflated. Readers are price-aware when it comes to books, more so than for most product categories, and the cover price creates a hard anchor that’s difficult to work around.

What we can do, and what we’ve chosen to do, is treat shipping as a marketing expense rather than a fulfillment cost. When I look at our budget, the line item for free shipping sits next to advertising and promotional spending, not next to postage and handling. This reframing changes how we evaluate it. We don’t ask, “Is this shipping cost justified by this individual sale?” We ask, “Is this shipping subsidy generating enough additional sales, enough repeat customers, enough goodwill, to justify its place in our marketing budget?” And the answer, consistently, has been yes.

The repeat customer effect is particularly significant. We track our customer data carefully (with proper privacy practices, I should add), and what we’ve found is that customers who place a first order with free shipping are significantly more likely to make a second purchase within six months than customers who paid for shipping on their first order. The free shipping experience, frictionless and pleasant, creates a positive association with buying directly from us rather than from Amazon. Over the lifetime of that customer relationship, the value of that positive association far exceeds the $4 we spent on postage.

There’s also a less tangible but very real brand effect. When a reader receives a book from us with free shipping, they feel like they’ve gotten a good deal. That feeling of satisfaction gets associated with our brand, with the reading experience, with the decision to support an independent publisher. When a reader pays for shipping and then has to wait two weeks for Media Mail delivery, the experience feels transactional and a little bit frustrating. The book is the same either way, but the emotional context of receiving it is completely different.

I want to be honest about the challenges, though, because this isn’t a simple win. The biggest challenge is that free shipping disproportionately benefits our most geographically distant customers. Shipping to a reader in Portland from our fulfillment partner in the Northeast costs more than shipping to someone in New Jersey. This means that our most expensive shipping customers are, paradoxically, the ones who benefit most from the free shipping policy. We could, theoretically, restrict free shipping to certain zip codes, but that would be a nightmare to communicate and would undermine the simplicity that makes the policy effective.

The weight issue is another complication. A slim novella costs almost as much to ship as a 400-page novel, but the novella retails for less, so the shipping cost represents a larger percentage of the sale. We’ve occasionally talked about whether it makes sense to have different shipping thresholds for different product types, but again, simplicity is king. “Free shipping on orders over $30” is a message that fits on a banner. “Free shipping on orders over $30, except for novellas which qualify at $20 but hardcovers require $40” is a message that makes everyone’s eyes glaze over.

The other challenge is returns. When a book ships for free and comes back, we eat both the outbound and the return shipping cost. Fortunately, book returns from direct-to-consumer sales are relatively rare compared to, say, clothing (where return rates can exceed 30 percent). Our return rate runs about 2 percent, which is manageable. But it’s a cost that needs to be factored into the overall equation.

Packaging is a hidden cost that deserves mention, too. You can’t just throw a book in a poly mailer and hope for the best. Books arrive damaged, and damaged books get returned, which costs you twice. We use rigid mailers for single books and small boxes with paper padding for multi-book orders. The mailer itself costs between $0.75 and $2.50 depending on size, and the packing materials add another $0.50 or so. These aren’t enormous numbers individually, but they compound with the shipping cost to create a meaningful per-order expense that the “free shipping” framing makes invisible to the customer. The customer sees “free.” We see a line item that includes postage, packaging, labels, labor for packing, and the occasional damage claim.

I should address the elephant in the room, which is whether offering free shipping is, at some level, participating in the same race-to-the-bottom dynamic that has hurt independent bookstores and small publishers. I’ve thought about this a lot, and I understand the concern. When Amazon uses its massive scale to offer free shipping, it creates an expectation that smaller players struggle to meet. By meeting that expectation ourselves, are we just reinforcing the standard that Amazon set?

Maybe. But I think the alternative is worse. If we don’t offer free shipping, readers who want our books will often just buy them on Amazon instead, where they’ll get free shipping along with a purchase experience that gives us less revenue, less data, and less relationship with the reader. I’d rather absorb the shipping cost and maintain the direct relationship than cede that relationship to Amazon in the name of an ideological stand against free shipping that the customer doesn’t care about.

The practical advice I’d give to other small publishers considering a free shipping policy is this: set a minimum order threshold that gets your average order value above the break-even point. For us, the $30 threshold works because our average book price is around $16, which means most free-shipping orders include at least two books. The margin on two books is enough to absorb the shipping cost and still generate a reasonable return. If your books are priced lower, you might need a lower threshold. If they’re priced higher, you might be able to offer free shipping with no minimum at all.

Also, consider using Media Mail aggressively. It’s slow, averaging about 7 to 10 business days, but it’s cheap, and most book buyers are patient people. We always offer a paid Priority Mail upgrade for readers who want faster delivery, but about 85 percent of our customers choose the free Media Mail option and never complain about the speed. Book buyers, in my experience, are not the same as Amazon shoppers who have been conditioned to expect everything in two days. They’re buying something they’re going to spend weeks reading; they don’t mind waiting a few extra days for it to arrive.

I’ll close with something I think about every time I process our monthly shipping invoices. The real question isn’t whether we can afford free shipping. It’s whether we can afford not to offer it. In a world where Amazon, Barnes & Noble, and every major retailer offers free or deeply subsidized shipping, asking readers to pay full freight to buy directly from a small publisher is essentially asking them to pay a premium for the privilege of supporting us. Some will do it happily, out of principle and loyalty. But most won’t, and I don’t blame them. Free shipping isn’t a gimmick. For us, it’s the cost of staying in the game.

If you want to see the policy in action, browse our catalog. Every title, from The Last Archive to The Cartographer’s Dilemma, ships free on orders over $30. We think you should have the book, not the receipt for the postage.