From the Tools of Change for Publishing blog:
As of today, we’ve now sold more than 100,000 ebook iPhone apps via the App Store. The geographic breakdown has remained remarkably consistent, with 54% of sales coming from outside the US. The top selling app remains “iPhone: The Missing Manual” from David Pogue. Several price points are represented among the bestsellers, and it’s worth noting 3 of the top 12 … are priced at $5.99, 20% higher than most of the apps. It’s also great to see apps from one of our client publishers, TidBITS, performing so well.