I'm confused about something. Didn't you guys say at point that War of the Burning Sky has sold rather poorly? If so, why are you going to go through the trouble of producing an extremely expensive book that will cost you $100 a copy to produce? I can't imagine that people are going to be all that enthusiastic to spend that much money on a giant hardcover book of a 3.5 adventure path.
It's Print on Demand- we pay for each one as it is ordered.
It hasn't sold poorly - but our 3.5 sales have dropped off a lot since 4E was announced. That's why we're converting it to 4E as well.