The 2026 Amazon KDP Puzzle Book Goldmine: How to Outsmart the Algorithm and Build a $5k/Month Passive Income Stream
Let’s have a moment of brutal honesty. If you spent the last year throwing generic, AI-generated Sudoku books at the Amazon wall hoping something would stick, you’ve probably noticed the “wall” is now a titanium fortress. According to recent 2025-2026 publishing data from Statista, over 1.2 million new low-content titles are uploaded to Kindle Direct Publishing…
