I hate it, they translate a book and decide that they want to sell it twice so they split it into two. They did it with every book of A Song of Ice and Fire and yesterday I’ve discovered they also did it with To Sleep in a Sea of Stars. I hate paying twice for one book.
I don’t think this is correct, at least for American editions. I’ve only seen full versions available, in both hardback and paperback
Quick look on Wikipedia and it looks as though the UK, Ireland and Australian versions of SoS got split in two because of length.