Just to add to my last post, Invasion is now free on Amazon too. I'd been trying to give away INVASION for some time now and the general advice was to offer it for free on other sites (Smashwords, ITunes etc.) and then badger Amazon to match the price. I’d read that it could take a while so, being an impatient person, I emailed Amazon directly through my Author Central account. Surprisingly, they made Amazon free within twelve hours, so for those of you who want to get your back catalogue on Amazon for free, try emailing them directly.