Have you heard about the Calvin and Hobbes Complete Works Box Set? Pretty fancy, but I think I already have almost every strip ever printed. What would be cool is if the box set had some new or previously unreleased material- then I might consider parting with 140 bucks.
What would be even more cool is if Bill Watterson unretired Calvin and Hobbes. I would give him $140 if he did that. Heck, $142. And fifty cents.