[lrossi]

Given that some of the titles have 1-star reviews, I think the goal is to scam people into buying expensive crap. The books are auto generated and the content is worthless.

In many countries it’s difficult to request refunds for online payments, especially if it was clear what you were buying. There’s a look inside button you can use to see a large selection of pages.

He generated so many books probably to cover all kinds of tech topics, to reach more victims.

[lrossi]

What I mean to say is that a launderer would not have bothered leaving bad reviews for his own fake books. The people who did this bought the books by mistake.

Not sure why this idea gets downvoted. The simpler explanation is usually right.