[dalai]

Actually I think the post highlights that even the statistic you quoted means less than one thinks it means. For example, some of the books included may have been only a few weeks on the market. Some titles may be niche books with the expected lower sales volume calculated in the price. BookScan only covers a certain percentage of print sales in the US, the total sales could be more than double that.

[tlarkworthy]

No it's a very good stat, I think they mean measure after 52 weeks, and note they exclude self published books, it's the crème and still suffers from huge Pareto (as expected)

[Retric]

“data showing at least 1 unit sale over the last 52 weeks coming from publishers of all sizes, including individuals.”

“Collectively, 45,571 unique ISBNs appear for these publishers in our frontlist sales data for the last 52 weeks (thru week ending 8-24-2022).“

Both descriptions mean books sold for 1 of the 52 weeks would be included. You would need to see how quickly sales spike and fall off to see how much those statistics underestimate sales over a books first year. Similarly they cover 16,000 retailers, however it could be some of these books like say textbooks are primarily sold outside of these channels.