re. back to press: I think you're confusing with their Complete Rocketeer (the one in color).

1,600 copies of a $100 isn't that low for such a book. And I agree with Fin Fang Foom: if they go back to press, it'll cost them much more money than if they had upped the initial print run in the first place.
The thing that makes me angry is that the book was quickly snapped by the comic-book equivalents of concert scalpers. People who buy the stuff just so they can immediately resell it at inflated prices. Just take a look at the number of copies on Ebay!