Unique selling point and marketing hats

So I'm supposed to be wearing my marketing hat - so what can I say... I need to tell you about my book's unique selling point (USP) well apart from the unique story, a behind the scenes view of living with kittens - and the 82 colour photos, this is a small print run of just 100 books, all of which will be numbered and signed. 

So for a first first - first edition, first print run it's pretty exclusive, and the first box is going down fast...