Is it 3 months of Evernote Premium in each notebook? Or 1 in each for a total of 3 months? If it's the first then it's still a good deal ($5/mo for EP) but not so much for the second.
antonioyonAccording to the video linked on the page, they suggest buying one notebook every 3 months to keep your premium subscription going. Therefore, I would assume each and every one gives 3 months.