Don’t forget they have to be Billionaires.
Used to be mere Millionaires when I first started reading romances.
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Confession - I read these type of books. I recently bought and finished an 8 book bundle ($.99) of Dragon Shifters. No doctors, hockey players or billionaires in any of them. :-`)
I get most free but have bought some. I also get a ton of free prepper books. Some are actually really good but a few I couldn’t finish.
Remember: whatever happens on your e-reader, stays on your e-reader.
There is a dragon preppers series. They dehydrate food by breathing on it.