I don’t think so. I’m 99.9% sure no one does. I mean, Watchmen is 12 issues in one book, so cramming that many in would be a nightmare. Plus they’re all different artists/writers so it would be strange, albeit possibly quite cool. Maybe each series will be put in a book if it becomes popular enough. Certainly easier to read and purchase that way. If you wait a few months, I’m sure people will be selling their sets on eBay so you can just go for it in one sitting :) If anyone knows differently, feel free to put it in the Ask.
Do you know if Before Watchmen will be released as a full book after all 35 issues have come out? I'd imagine so, I was just wondering if anyone knew for sure.