Yeah, I probably average 1000 pages per month on Kindle for iPhone. My usual purchase flow is: I see a book that interests me, I get the sample sent to my phone. When I feel like reading, I read some samples and If I like one I can order from my phone and start reading.
With this particular book it would be a safe bet, I've read all his books, even REAMDE twice, which others didn't appear to find as compelling. But I don't like even the concept of pre-orders on general principles, although fiction publishers don't abuse them as badly as other i.e. game publishers (http://www.reddit.com/r/gaming/comments/2s6zgz/stop_preorder...) I still prefer not to participate.