@Robert Clegg: Where are you getting the 3-month, $15k budget from? Is it the strength of the idea, or the strength of the marketing that brings in the dollars? How do you really know? You cannot go back in time and relaunch one way versus the other and do a study. Once the idea is out there, it is out there.
I have been trying to determine the magic formula for Kickstarter success, and my research suggests no magic number for spending. I have spoken to a few people responsible for big KS paydays, over $2M total between them. I find a commonly reported theme that it is best to ramp up the PR machine before the Kickstarter, but I'm not convinced that even that is absolutely necessary for the right product. First-day sales seems to be a common theme for the winners. But if there is excitement there, people will be tripping over themselves to write about it. How long does it take to get something into a blog these days? How would $15k help in that effort? Seriously. Someone tell me where it goes that is effective.
@Saurabh: Use KS as validation. If you are not pulling the numbers you had hoped to pull, or not getting the attention in the media, that could be telling you something about your product. Don't ask me why the "Life is good" Tshirts was such a hit. The creators of that line don't even know. But they knew it was a hit right away when they sold out of the shirts in minutes.
BTW, your video and ad copy is good quality. I was a little confused about the purpose of the product at first, but I eventually got it. It certainly looks like you worked hard on it. So that is not the problem. How many page views do you have per day? Does KS offer those statistics? Good luck. I hope you can hit you number.