It's on Amazon UK as it is a british release. Before you ask, it isn't region free but even without a region free Blu-Ray reader I'm sure you have everything needed to play at least a zone 2 dvd.
Has it been confirmed that it's region locked...?
I think they are still classed as a charity, Jimmy, which is why their releases will always maintain high prices. They're such limited runs anyway. Have you had any of their DVDs yet? They are great value, often being the dual format packages.