Here’s an unlikely bestseller: A 700-page book on 21st century economics

Supply and demand

"The unlikely bestseller, clocking in at nearly 700 pages, is already serving as an interesting case study for modern book publishing.
One of the hallmarks of the book's success is that it is sold out on Amazon, even though there is a digital version available on Kindle, too. (Disclaimer: The Washington Post is owned by Amazon's founder and chief executive Jeffrey P. Bezos.)
"You can have it on your e-book reader, but that's not the same as having the book," said Donnelly. "I'm not saying this book is a Tiffany's bag, but nobody goes to Tiffany's and buys something and doesn't get that little blue bag. I think there's still some of that about books.""

Here’s an unlikely bestseller: A 700-page book on 21st century economics