I saw this stapler featured in a longer video the other day and wondered why I'd never seen one in the stores. I can't tell you how many times I've wanted to staple a booklet but didn't want to pay money for a longer one just for those rare "booklet moments."
(After watching this, I looked everywhere on the Internet and could only find these for sale on ebay. They're made in Japan, but I wonder why they're not more readily available. I think they may need special staples, but then so do those super small staplers. If anyone knows why these aren't widely distributed, I'd love to know the reason).