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That’s because those are not personalized. The economy of scale allows for artists to make generic coloring book with high quality art, but it’s expensive for artists to create (and customers to buy) custom made coloring books personalized for the customers photos.
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My partner makes one! Go grab a copy if you're in Australia, the wonderful POP local -- started as POP Canberra -- sells them.

https://www.poplocal.com.au/product/bum-man-colouring-book/

He's 'Bum Man'. A man (actually it's asexual) who is a bum. I mean c'mon.

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Looks cool, but they should show more of the pages online. All I see is the (already coloured) front cover.
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