I have it but haven't read it yet - I actually wanted the Tony Parsons one, which Clayhead kindly sent me and didn't want the Prada one in return, on your recommendation I'll give it a go, twiggy.
Our Oxfam shop has lots of freebie books too, hoxtonchick - I was looking at a Judy Astley one today, free from Prima, brand new, but they had the same book used in its publisher's ed for 50p less so I got that instead.
(Most books in our Oxfam are £1.99 or £2.49, they actually have stickers on, I think we must have a high turnover of books here or something; I also went into the Sue Ryder shop today, and they're all 75p-£1.50 in pencil.)