I've seen this for a few of the successful kickstarters, and it always makes me kind of sad; when Kickstarter is working at its best, it, y'know, kick-starts something so that the initial backers are just the first run, and then the product will continue to be available (and possibly the line will expand).
Obviously it's totally within the creator's rights to just use the kickstarter funds to fund a single round of product. But, it makes me sad.