I have not seen any film adaptations but like most people, am familiar with the references to the Stepford Wives. Written in 1972, it can now be considered as something of a classic, and something that has undoubtedly inspired a great number of subsequent authors and film-makers.
I bought the e-book version and it is very well edited and without any annoyances at all. However, it is a little uneconomical in price, at £5.31 (down from £7.99) for 139 pages. The dotted line indicating length is not much longer than a lot of the samples and short stories above and below it on my Kindle. That said, it is worth a read, especially if you have a voucher to use or find it in a sale (or pick up a hard copy for a reasonable price).
I won't go into the plot too much but I would like to respond to many of the comments that say the ending is disappointing or missing, or that it ruined the story/book for them. The ending is supposed to be that way and couldn't really be any other way if you think it through logically, based on who the narrator is and what happens to her by the end of the story (you are admittedly supposed to put two and two together and figure that out but I don't think it's too tricky!). I also think it ends the story on the perfect note, with the right tone, and leaves the reader with the intended uneasy sensation, intentionally suddenly.