While Amazon does not sell EPUBs directly (they use AZW/KFX), if you must read on a Kindle, buy the book from Amazon. You can then use the free software to convert the file to EPUB for archival purposes, or simply read it in its native format on your Kindle.
Maryposa by Meera Kean isn’t just a book; it’s a mood. It left me staring at the wall for a good ten minutes after finishing, which is always the sign of a keeper. Maryposa - Meera Kean.epub
If you do not use a Kindle, these stores provide clean, DRM-protected or DRM-free EPUB files: While Amazon does not sell EPUBs directly (they