Amazon makes it really easy to publish your own books, and apparently a lot of slimy "authors" are publishing books with very similar titles to other highly rated books in an obvious attempt to get people to purchase their books by mistake.
One example of this is
Thirty-Five Shades of Grey by J.D. Lyte. The book you were probably looking for was E.L. James'
Fifty Shades of Grey, which itself started as fan fiction based on Stephenie Meyer's
Twilight series.
A couple other examples include,
I am the Girl with the Dragon Tattoo, and
Twilight New Moon. Probably not the books for which you are looking.
Here is the original article on this story from
Fortune Magazine.
I wonder how long before publishers, who already can't stand Amazon, start bringing lawsuits. Personally, I'm not a big fan of the publishers, but I couldn't blame them if they did start suing Amazon over not doing a better job at preventing this kind of thing.