Leviathan was the 1st non-Transformer book I've bought
for over 4 years... The last book i've bought was some of Dan Brown's back in 2009... It was also the only series I went through the trouble of getting the 1st edition hard cover for (the ONLY other hardcover book i own is Transformers: Exodus)
On top of that, I searched my whole country, only to find they have it only in softcover format, so i had to import all 3 Leviathan books from the US. ( I live in Asia).
That should tell you what I think of Leviathan.