If you’re shopping for Charles Williams books, a new collection of older copies has been posted for sale by Roger Brown of Brown’s books here:
http://www.abebooks.co.uk/servlet/SearchResults?an=Williams%2C+Charles&sts=t&vci=131212&x=51&y=15
Tell Roger you’re part of the Society!
UPDATE 23 January 2014: Â It looks like they’ve all been sold. Â As of today, that search only turns up books by other authors with similar names.