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Non-Expert Author: $160K Earnings

Greg Lim
  • Greg Lim

  • Author
  • $160,000 Earnings From Writing Non-fiction Books

Greg Lim writes

In about six years, I have sold over 40,000 books and earned over $160,000 (income) from selling non-fiction books on Amazon

That works out to an average of ~$2200 per month over the six years 😎

Greg has achieved that despite holding down a full-time job in church ministry, being a father of three, and not considering himself an expert on the topics he writes about.

His most profitable book: Beginning Node.js, Express & MongoDB

before writing the book, I did not have experience in that… I did have previous experience with older server-side technologies, but not Node…. So I read the top three selling books on Node, went through the top few online courses on Node, and compiled all that content into my very own compact book (which makes me know more than 90% of people already).

And because I was learning as I was writing, I didn’t have to worry about sounding overly advanced with jargon as I wrote from a beginner’s perspective.

Unlike many other examples I’ve highlighted of successful authors, Greg doesn’t seem to have leveraged a big audience of his own to drive initial sales.

Instead, he identified trending topics to write about – more about this in his article – and apparently relied on Amazon customers finding his book via search 🔎

If you love research and writing – and have plenty of patience – you could probably emulate Greg’s success in many other niches.

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Updated: March 7, 2025

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