Official UK price is £25, but Amazon.co.uk is selling for £22 and £12.99 on Kindle. In Canada, $53.95 and $17.99 Kindle, and in Europe €22.19 and £18.75 Kindle.
One of the first reviews is in The Scotsman, and says (in part) "This very fine book is a forensic look at the movement and its influence, and has several points where you both realise something and ponder 'why did I never realise that?'”
That is rather what I had hoped for.
The book looks at the intellectual foundations of Traditionalism, its application both to various projects, and "post-Traditionalism." Each chapter looks first at the general intellectual background to the issue it discusses, and then at Traditionalist understandings, starting in most cases with René Guénon and ending as much as possible with living Traditionalists.