How to get a copy of my book worldwide

A couple of people in the US have told me they have had trouble getting hold of my book from Amazon.com.

I've no idea why that is, but as far as I can see bookseller called the Book Depository is selling my book at a competitive price and offers to deliver free world wide. Their page for A Place of Meadows and Tall Trees is here. I've used The Book Depository several times in the past, and think their service is excellent.