Just a bit of procedural knowledge from my post on deep literacy earlier that might be helpful to someone.
- Go to your relevant Amazon website (usually .co.uk for me)
- Search a with a dash followed by a random strong of characters, like this: -nfjdkslanfdjskalnfjdsklanfjsdkal (mine always seem to have lots of Ns and Ds
- You’ll get a result saying something like “1-16 of over 80,000,000 results.” Yes – 80 million results.
- You can refine your search by clicking the drop-down menu by the search bar and searching in say, books (“1-16 of more than 90,000”)
- When you’re in a category an option appears for ‘advanced search’ – click there to get to this:

6. Then you can search to your heart’s content by age category, subject etc and the nonsense string from earlier (-fbdjskabfjhajkfdsa) and see what the “more than 40,000 books…” bit says.
This doesn’t seem entirely accurate – I’m sure that there are far more than 90,000 books, for example. But it seemed to work pretty well once you get into subcategories:
- 40,000 books in baby/pre-school
- 80,000 books for kids 4-8
- 70,000 books for kids 9-12
- 60,000 Young Adult books
It’s the best I’ve been able to do for now, at any rate – if you know how to get better data on this please drop me a comment because I’d love to know.