RTL-SDR For Beginners: Radio On A Tight Budget For Everyone

I saw the price of this book £15 & all was OK. However I went to look at how many pages there are in the book I saw it had only 56 pages altogether. I was expecting at least two to three hundred for the asking price. As far as I'm concerned £15 is a rip-off & do not intend wasting my money. Unless of course the publisher brings to down the asking price to a more fair cost of say £3.50 to £4.00. Because that is all its worth.