In shorts: it's well worth a couple of bucks!
Nice mini-campaign front, ready to use. Well written, it stays with the Dungeon World canon. Places have their tags, main NPCs have good stats and moves, and you get some custom moves to correctly play the final boss battle and eventually to keep the big danger WITH you.
It correctly follows the "Play to find out" philosophy.
Final note, I don't like cheap pictures, and sadly this module has plenty of them. I'd prefer a clean, pictureless version instead. Also, it's not difficult to find some good free font: I think the author should work on it, 'cause good looking titles and main names in cool fonts can make the difference from a so-so product and a freaking good one. Almost the whole text is in a plain, anonymous, arial like font.