Laine, thanks for doing such a thorough check on stores! This is fascinating info for me. I'd heard about the money-back-guarantee promotion; maybe that will convince some new buyers to take a chance on it. The Noah's Ark Quest got a nice mention in Country Style magazine, so hopefully that will help get the word out down there.
Lene, word from Little, Brown (my publisher for non-US/Canada English-language rights) is that since there are no major e-book retailers in Australia, the plan is to release the e-book worldwide at the same time as the UK paperback release in August. Sorry you have to wait. But on the bright side, Australia and New Zealand get the paper version five months early.