It's a gem of a book, and when someone I knew wanted a copy about ten years ago I searched the web. One copy available for £345. I wrote asking if they'd got the decimal place wrong, no - three hundred and forty five pounds.
Some folk will pay £60-£70, as it's less than a couple of tankfulls of petrol in a car today. Wouldn't like to say what the copyright 'police' might say about mediafire though.
Still got my original, not selling either!