Please know that I'm not saying you're trying to scam people. I'm saying that they will see the video and then feel scammed. You have perfectly noble intentions but as the video is laid out you fail to communicate them.

EDIT, just want this to be perfectly clear: You seem to be an awesome person, you have an awesome product, it is awesome that you use Kickstarter. BUT your video is a turn off. And it is a shame because of all the awesomeness people will miss who only see the video and then hit the back button at the exact moment in the video when you say "Well, I've already started working on a much more affordable production model". You introduce your main product with the absolutely non-sexy word "affordable", after having shown a much more awesome version for a full minute and a half.