I'm not to well-versed in sticker economics, but it seems a kickstarter is a bit overkill for such a small project.
Aren't stickers dirt cheap?
Please. It’s actually called stickernomics...
I guess the Kickstarter could be used as a means of gaining more publicity as well as a way of avoiding having to create an e-commerce site.
Having been said, $2 for a sticker is a bit much ImO.