Push away, just for less money.
I have nothing against the publishing of this 'book', nor the use of a story to advertise.
I do however a take a little bit of offence at the price. With my limited disposable income already spread thin thanks to having too many relatives requiring presents, and that annoying girlfriend who insists on receiving something at this time of year, I'm not sure I could justify ~£6 for what is arguably a culmination of freely available Internet content (albeit content chosen and presented for me in a useful format).
Perhaps if you were able to keep such items in the magic 'same as coffee' ~£3 range I would be more inclined to purchase (and perhaps if your chosen distribution method was less Amazon and more stop raping me for your part in the sale of my content you could afford to charge less anyway?).