We analyzed 974,656,743 book sales detected on Amazon.com between 2016 and 2025, across a catalog that reaches 6,267,373 books with sales activity in 2025. As far as we know, it is the largest public dataset ever assembled on the American book market on Amazon. Here is what ten years of data actually say about used books in the United States — including a few things that contradict the standard narrative.
Everyone has an opinion about used books: publishers say resale is eating their lunch, sellers say the golden age is over, buyers say bargains have disappeared. What almost nobody publishes is long-run data — volumes, prices, seasonality, year after year. In our breakdown of the US market's players, we looked at who sells what (ThriftBooks, AbeBooks, eBay, Better World Books…). This time we do the opposite: set the opinions aside and read a full decade of raw data from Amazon.com — the one channel that can be measured at this level of detail.
The essentials in 5 numbers
1. 974,656,743 sales analyzed over ten years — the largest public dataset on books on Amazon US.
2. Used book sales more than doubled between 2016 and 2024, from 47.6 to 98.5 million a year, and are now holding on a high plateau.
3. A used book sells for a median of $4.95 in 2025 — up 52% since 2016, yet still 66% below the same book new ($14.45).
4. The busiest month is August: 9.5% of annual volume, 1.25 times more than June — the American book calendar runs on back-to-school, not just Christmas.
5. The penny book is nearly extinct (0.7% of used sales under $1, versus 36.3% in 2016) — while in 2024 almost 11 million used sales closed above $20, including 2.8 million above $50.
Is the used book market actually growing?
On Amazon.com, yes — and by more than most people assume. In 2016 we detected 47,562,337 used book sales. In 2024, the last complete year in the dataset: 98,548,487 — a record, and more than double the 2016 level (+107%, roughly +9.5% a year). The only real setback of the decade was 2020, when COVID disruptions cut used sales by 11.4% — a dip fully erased by 2021. Since 2022 the market has settled onto a high plateau: 91.6, 91.6, then 98.5 million sales, and on a comparable-months basis 2025 is running about 3.6% below 2024. Not a boom anymore — but nothing like a decline either.
Behind the headline curve, two structural facts matter more:
- Used books drive this market. Used copies account for 77.1% of all detected sales in 2025 — nearly four sales in five. The share has eased from 81.9% in 2016 as the New segment grew faster, but on Amazon US the book market remains, overwhelmingly, a used book market.
- The catalog is exploding faster than the demand. Books with at least one sale in the year grew from 3.47 million (2016) to more than 6.3 million — 1.8 times more titles. Volume per title barely moved: 16.7 sales per book in 2016, about 15 in 2025. Twice as many titles are sharing a market that "only" doubled — the growth went wide, not deep.
An honest caveat
The coverage of our tracking varies over time (how many titles we follow, how often we check them), and the most recent months of the dataset are incomplete — so recent year-over-year volume comparisons are made on matching months (January-April; see the methodology note at the end). The core indicators of this study — prices, segment shares, price brackets, rank bands — are averages per sale and do not depend on coverage.
How much does a used book cost in 2025?
$4.95 at the median. That number carries the biggest story of the decade: in 2016 the median was $3.26. The typical used book on Amazon.com is now 51.8% more expensive than it was nine years ago — a rise of 4.75% a year, nearly twice the pace of new books (+2.53% a year, from $11.54 to $14.45). Used prices are climbing faster than new prices, which means the famous used book discount is slowly shrinking: 71.8% off in 2016, 65.7% off in 2025.
Look inside the price distribution and the structure of the market appears:
- The floor has risen. Sales under $3 made up 48.6% of the used market in 2016; they are 35.0% in 2025 — and almost none of them are under $1 anymore (next section).
- The mid-market is the center of gravity. 38% of used sales now close between $5 and $20 — the zone where a seller's economics actually work after fees and shipping.
- The average is twice the median. The mean used price is $10.05 against a $4.95 median. That asymmetry is not a statistical curiosity — it means a small share of expensive books carries a disproportionate share of the market's value. We come back to it below, because it is the single most important fact in this study for anyone who resells books.
- Collectible is quietly going upscale. The smallest segment tripled in volume (390,000 sales in 2016, 1.2 million in 2025) while its average price climbed from $19.41 to $29.90. Fewer bargains, better copies, real money.
What it means
For buyers, used books remain the best deal in retail — 66% off — but the deal is not what it was in 2016. For sellers, the message is the mirror image: the floor of this market rose 52% in nine years. The books you used to leave behind because they'd fetch a dollar now fetch four or five. Margins are decided at the buy, and the buy has never been more forgiving at the low end.
The death of the penny book
For years, the emblem of the American used book market was the penny book: a paperback listed at $0.01, the seller making their margin entirely on the shipping credit. It was the visible face of a market drowning in supply. Our data lets us date its extinction precisely: in 2016, 36.3% of used sales closed under $1 — more than one in three. In 2025: 0.7%.
The same period shows a second, equally dramatic shift: competition thinned out. In 2016, at the moment a used book sold, the listing had a median of 27 competing used offers (46 at the 75th percentile). In 2025: 13 (27 at the 75th percentile). On the New side the drop is even steeper — from 22 competing offers to just 3. Half the crowd left the room.
Our data shows the what, not the why, but the usual suspects fit the timeline: successive USPS Media Mail rate increases that killed the economics of $0.01 listings, consolidation among the big volume sellers, stricter marketplace rules, and part of the low-end volume migrating to other channels. Whatever the mix, the outcome for today's seller is unambiguous — and surprisingly good news.
What it means
The race to the bottom is over. A decade ago, any common book faced dozens of competitors willing to sell at one cent; today the typical listing has half as many rivals and a price floor around $3-4. The US market didn't shrink — it cleaned itself up. For an individual seller, this is the least crowded Amazon has been in ten years.
When do books sell?
Books follow a calendar, and it is remarkably stable from year to year. If sales were spread evenly, each month would take 8.3% of annual volume. The reality:
- August is the biggest month of the year — 9.5% of annual volume, 1.25 times more than June (7.6%), the quietest. This is the American market's signature: the year peaks at back-to-school, not at Christmas.
- The year actually has three peaks: August (9.5%), January (9.2%) and December (9.0%). August and January are the two ends of the academic calendar — fall and spring semesters — with December's gift season in between. Quarterly, the year is astonishingly flat: Q4 takes 25.2% of volume, Q1 24.9%.
- And here is the trap almost everyone misses: the big volume months are not the good price months. In 2025, the used median peaked in September at $5.30 and stayed at $5.10-5.30 from July through October — then fell to $4.50 in November and $4.20 in December, the cheapest month of the year. Spring is soft too ($4.50 in March-April). Holiday shoppers buy used books; they just buy cheap ones.
What it means
The seller's calendar writes itself: source in spring, when the market pays the least; have everything listed before August, when both volume and prices peak; hold your prices through October. And don't count on December to rescue your margins — it brings buyers, but at the year's lowest prices. In the US book business, back-to-school is Christmas.
Bestsellers or deep catalog: what actually sells?
Last structural question — and probably the most useful when deciding which books to pick up: does the activity concentrate on bestsellers, or on the deep catalog? We classified every sale by the book's sales rank at that moment (a low rank = a book in high demand):
The drift away from the bestseller lists is steady, year after year:
- In 2016, books ranked in the top 20,000 accounted for 5.1% of all sales. By 2024: 3.4%. The hits keep selling — but they are a shrinking slice of the market.
- The 100,000-500,000 band is the market's center of gravity: 61.7% of all sales in 2024 (55.8% in 2016). These are books that sell a handful of copies a month each — invisible individually, dominant together.
- And the key number for sellers: price runs opposite to popularity. In 2025 the median sale price by rank band goes from $7.70 in the Top 1,000 down to $5.30 around ranks 5,000-20,000… then climbs steadily to $8.90 beyond rank 500,000 and $11.90 beyond rank 2 million. The deep catalog sells for more than the bestseller lists — scarcity pays better than popularity.
What it means
The volume lives where the eye doesn't go: slow-moving titles that each sell rarely but together make up two thirds of the market — at unit prices above the bestsellers everyone recognizes. This is exactly the terrain where intuition fails and per-title data wins: our guide how much is my book worth? explains how to estimate each copy's real value before you buy it — or give it away.
The 1% that changes everything: books worth $50, $100, $200+
Everything above describes the ordinary book — and it would be easy to conclude that reselling is a game of nickels. That would be reading the data backwards. Remember the asymmetry: the average used price ($10.05) is twice the median ($4.95). Distributions only look like that when a minority of expensive books concentrates a large share of the value. Let's count that minority, using 2024, the last complete year:
- About 8.2 million used sales closed between $20 and $50 — more than 22,000 every day.
- About 2.8 million closed above $50 — over 7,500 a day, every day of the year, some of them well beyond $100 or $200.
- The Collectible segment — the specialists' corner — saw its average sale climb from $19.41 to $29.90 in a decade, with a quarter of its 2025 sales above $36.
That is nearly 11 million sales a year above $20, in a market whose typical book sells for five dollars. And here is the uncomfortable part: these valuable books look like nothing in particular. Out-of-print editions, professional and technical manuals, niche hardcovers, first printings — sitting on a thrift store shelf, in a donation box or an estate-sale carton, they are indistinguishable to the naked eye from the 50-cent paperback next to them. We break down why some used books gain value in a dedicated article.
What it means
A market whose median is flat is not a dead market — it is an arbitrage market. When prices no longer rise on their own, the margin doesn't come from the tide; it comes from selection. The reseller's job is not to sell a lot of books — it is to identify, in seconds, which ones belong to the 1% worth $50, $100 or $200. That is exactly what BiblioScan was built for: scan an entire shelf and let the data flag the exceptions before they sell for a dollar at a yard sale.
How does the US compare abroad? We ran the same study, with the same methodology, on Amazon France — a saturated market where every used sale is contested by a median of 10 competing offers — on Amazon Germany, Europe's most mature used-book market, and on Amazon Spain, a young market that multiplied its activity sevenfold since 2016. Same method, four countries.
What this changes for you if you sell books
- Your margin is decided at the buy, not at the sale. The floor rose 52% in nine years, but the median is still $4.95: volume alone won't make you a living. Buy low, and know the real value of each book before paying for it — the difference between a $1 book and a $80 book is invisible on the spine.
- Respect the calendar — in both directions. Source in spring at the year's softest prices, have your inventory listed before August, and hold firm through October: July-October is when used books fetch their best prices ($5.10-5.30 median versus $4.20 in December).
- Don't chase only bestsellers. Two thirds of the market sits between ranks 100,000 and 500,000, and books beyond rank 500,000 sell at higher median prices than the Top 1,000. Well-selected deep catalog is the most underpriced asset in this market.
- The field has never been this open. From 27 competing used offers per sale in 2016 to 13 in 2025: half the competition is gone, and the penny sellers with it. Pick the right books, list them clean, and the market meets you at $4.95 minimum — our guide to the best sites to sell used books covers where each kind of book belongs.
Methodology
The figures in this study are estimated sales, not official Amazon numbers: we detect them from movements in the bestseller rank of millions of books on Amazon.com, tracked continuously since 2016. At each detected sale we record the price and condition (new, used or collectible) of the cheapest in-stock offer. Scope: Amazon US only — eBay, ThriftBooks, AbeBooks, Better World Books, Half Price Books and other channels are not covered. Partial years (2015, 2026) are excluded, and because the most recent months of the dataset are incomplete, year-over-year volume comparisons involving 2025 use matching months (January-April).
Frequently asked questions
How much does a used book cost on Amazon.com?
The median observed price in 2025 is $4.95 — 66% less than the same book new ($14.45). About 38% of used sales close between $5 and $20, and the sub-$1 penny book has all but disappeared (0.7% of sales).
What is the best time to sell used books?
August — the single biggest month of the year (9.5% of annual volume), driven by back-to-school. Prices also peak in late summer: the 2025 used median reached $5.30 in September and held at $5.10-5.30 from July to October, against $4.20 in December. List before August; hold your prices through October.
Is the used book market growing?
Yes: detected used sales on Amazon.com more than doubled between 2016 and 2024, from 47.6 to 98.5 million a year, and are now holding on a high plateau (about -3.6% in 2025 versus 2024 on comparable months). The bigger change is price: the median used book rose 52% in nine years.
Why are there books listed for one cent?
It is a business model built on the shipping credit: the book is essentially free and the margin comes out of the postage. It is nearly extinct on Amazon US — 0.7% of used sales closed under $1 in 2025, versus 36.3% in 2016.
Are there used books actually worth $50 or $100?
Yes — far more than most people think. In 2024 we detected about 2.8 million used sales above $50 (over 7,500 a day) and nearly 11 million above $20, on Amazon.com alone. They are typically out-of-print editions, professional and technical manuals, and collectible copies — impossible to tell apart from a $1 book without checking the data.
TL;DR
Ten years and 975 million sales draw a market that grew up: used book sales on Amazon.com doubled to a 2024 peak of 98.5 million a year, the penny book died (0.7% of sales under $1, versus 36.3% in 2016), the median price rose 52% to $4.95, and competition per listing halved. Volume drifted from the bestseller lists to the deep catalog — which now sells at higher unit prices than the hits. And the median hides the essential: almost 11 million sales a year close above $20, including 2.8 million above $50. In a market like this, selection is the margin: buy low, list before August, mine the deep catalog — and scan every book before deciding.
We update this study every year as new full-year data becomes available.