I will be honest here. I bought this JUST for White Picket Witches and consider it money well spent.
To get all the other settings is icing.
WPW is a perfect setting and really shows off the sort of thing Fate can do well. If you enjoyed The Witches of Eastwick, the short lived Eastwick or even Charmed, the Craft, Beautiful Creatures and any other number of old families steeped in dark magic dramas then this is a perfect choice for you.
Basically you get six "mini" games, campaigns to use with Fate. White Picket Witches is only one of these. Of the others Tower of the Serpents and Wild Blue are great fantasy but Fight Fire really shows off something you can only do with Fate.
Honestly. If you like Fate then get this. You will be happy.