Looks like the Mobi Creator program with its .prc files is no longer accepted. Have to use the Kindle Gen tool instead. I'll be experimenting with it myself later, see how it works--like the Mobi, you can import the html directly into it, then convert...

I think Amazon's bestseller list is just for their own sales. The NYTimes collects sales from everywhere.

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My personal website: Novels, photos, video, sculptures and more
Evidence of a Lost City: An animated movie and novel, in progress
Hag: A novel and live-action movie