The early success shows there is interest for the updated design Demo-Shield. This also shows that a unique design like this may not be a high volume product Sparkfun or Adafruit company would want to carry but it is something that a niche number of people find useful.
I've backed several projects on kickstarter to support other
I've designed a lot of electronic products in my day jobs, mostly for the automotive market, and based on my experience, the answer is no!
When the project hits 10 days left and still is far from hitting that large target, even people who are interested in it no longer support it. This is a shame because it may be a great idea but only to a smaller niche group who could never afford to support a $30k investment and end up never getting the product.
My advice is don't be greedy. Let the project tell you what its worth. Figure out the true minimum you need, add the 10% kickstarter and Amazon collect and then price your target a small amount above that for safety factor and let the kickstarter community tell you what they think with their support dollars.
So my advice is simple. If you have a design that you think would be popular then don't be afraid find out if the Kickstarter community agrees. Just don't be greedy.