Why are Some Kindle Books More Expensive than their Print Equivalents

Recently I attended a poetry reading during which a poet with whom I am unfamiliar read their work. After the reading I requested that they send me a link to their book, which they duly did.

 

On clicking on the link I was surprised and somewhat annoyed to see that the Kindle edition retails at £6.2  whilst the paperback costs only £3.2. The book in question is traditionally published so I strongly suspect that the author has had no influence as regards the respective prices, and I in no way wis...