a "Writer's Tale" tale

So I finally went to buy RTD's "The Writer's Tale" (more because I'm interested in the writing process for Doctor Who than because I'm interested in how RTD writes), but after a long wait, Amazon.com has now informed me that they can't get the book! How hard can it be to get the book? I can get it myself from Amazon.co.uk -- well, assuming they'll mail overseas, but it looks like they will. Other American bookstores are having the same trouble. BBC America says the book is "unavailable" as well. Come on, guys, there's no "region 1" vs. "region 2" issue with a book! The British version is fine! It's still in English! If things are occasionally spelled "ou" instead of "o," I think I can deal.

So now the question is, should I go ahead and order it from England, and pay the international shipping? Or should I wait until my upcoming trip to England and buy it there? Sometimes it's nice to have a book to read while you're traveling, but I don't want to be lugging around anything too heavy.