ThinkGeek.com offers the Staple-Free Stapler
in four colors for $5.99
. With around $7
for shipping, it's tied with an April mention for the lowest total price we've seen for this unique item.
Instead of using staples, this "stapler" cuts the paper and folds it upon itself, to bind several pages together.
It's a lot like a Zen question: What is a stapler called, if it doesn't use staples? Oooommmmm.