How are these sensors different from these ones on this site: http://www.monnit.com/products/ I think is the same amount of money and I can get them faster.
Monnit is our first OEM partner on the sensors, but our core focus in the sensor/control integration aspect. If you want to do your own low-level development for these specific sensors for a vertical solution, you could. We're providing a much broader solution and doing a lot of the software implementation work for you.
As for the ship date, Kickstarter is working hard to ensure that we give dates (that we are pushing to beat) that are realistic and do not slip like some projects have.