"... the 2000+ player for which 100 Endgames You Must Know is really intended ..."
https://web.archive.org/web/20140708105702/http://www.chesscafe.com/text/review645.pdf
"... Players from 2000 up to International Master will find 100 ENDGAMES YOU MUST KNOW quite useful." - IM John Donaldson
http://www.jeremysilman.com/shop/pc/100-Endgames-You-Must-Know-78p3863.htm
https://www.newinchess.com/media/wysiwyg/product_pdf/9026.pdf
Various endgame study possibilities discussed at:
https://web.archive.org/web/20140708103149/http://www.chesscafe.com/text/review594.pdf
https://www.silmanjamespress.com/shop/chess/silmans-complete-endgame-course/
https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/
http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf
https://www.newinchess.com/media/wysiwyg/product_pdf/7742.pdf
https://www.chess.com/article/view/book-review-winning-chess-endings
https://web.archive.org/web/20140708105702/http://www.chesscafe.com/text/review645.pdf
http://www.jeremysilman.com/shop/pc/100-Endgames-You-Must-Know-78p3863.htm
https://www.newinchess.com/media/wysiwyg/product_pdf/9026.pdf
http://chessimprover.com/averbakhs-chess-endings-essential-knowledge/
https://web.archive.org/web/20140708101138/http://www.chesscafe.com/text/review373.pdf
https://web.archive.org/web/20140708234309/http://www.chesscafe.com/text/review704.pdf
http://www.gambitbooks.com/pdfs/Understanding_Chess_Endgames.pdf
http://theweekinchess.com/john-watson-reviews/endings-endings-endings
http://theweekinchess.com/john-watson-reviews/the-end-game-comes-before-we-know-it
http://theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all
Before buying any particular book, I suggest going to the publisher site to see if it is possible to view a sample.
I was thinking of buying 100 Endgames You Must Know but I was wondering how does it compare to the free Basic Endgames book by TheoryHack? Has anyone gone through them both and is willing to share an opinion? I'd really appreciate it. Thanks for your time.