My favorite quote I've heard about this sale today comes from the lovely ladies at The Mary Sue, in reference to how The replica Monster Book of Monsters is actually a false book for hiding items:
"Because if you have a friend over, they’re not going to totally attempt to open a replica of The Monster Book of Monsters as soon as they see it on your shelf and then find your Horcrux."
Personally, I've gone to much more troubling lengths to hide my horcruxes than that.
Not that I've made any horcruxes.
Those don't exist.
Ooh, look- shiny books about okay movies!