Fin Fang Foom wrote:

Well, the paperback is even more available (as in: you can actually buy a new copy), and yet it got reprinted again.
Might be because it keeps on selling and selling and selling -- probably doing quite well (in that specific format) with mass market booksellers.

Which boils down to:
Paperbacks sell better than hardcovers.  That's been pretty consistent across all kinds of books, not just graphic novels.  I mean, there's a reason it's called "mass-market paperback".

'Reading' / 'Reading soon' stack: DC/Vertigo - ArtOps, Batgirl, Gotham Academy, Gotham by Midnight, Injustice; Marvel - Allred's Silver Surfer; Other - Abe Sapien, Descender, Fight Club 2, Goon, Mind MGMT, Southern Bastards