App info is currently processing and/or the app is not yet fully available for sale on the US App Store.
Jesus and I thought Things is expensive. I guess the price isn't a huge deal for people really committed to their todo applications but I use a list manager along with Google Calendar for timed todo's and it works great for me. I really don't think GTD applications (desktop iPhone iPad) are worth 80+ dollars when there are free or cheap alternatives that work just as good.