Legal costs sense at an insane price

Amazon are taking pre-publication orders for Dr Mark Friston's Civil Costs: Law and Practice (see link) at the discounted price of £56.25 (with free postage).  This would be an insanely low price for any legal text book. I really can't believe that the price is so low for this book.  Don't be fooled into thinking the low price means you won't get something of serious substance.