[wink]

Isn't that 100% on the authors/publishers? Such deals exist, bundling the ebook version for technical books. Might be misremembering, but some authors (of tech books, fwiw) always were happy for that feature. But then again they usually don't live off the royalties, but are developers/consultants anyway.

[mynameisvlad]

Amazon did this for a bit with some of their physical books, especially if bought from their retail stores. Looks like they shuttered this system in 2019: https://the-digital-reader.com/2019/09/30/amazon-is-shutting...

They do offer a discounted Audible book if you own the eBook: https://www.amazon.com/hz/audible/matchmaker