As for a question, how do you balance low power with performance? Is there a target range or use case to decide the performance envelope?
A normal non ADS-B iPad GPS flight module is almost 10% the price of the Sentry
We're focusing on embedded applications with ADSBee m1421 applications right now but it's definitely tempting to roll m1421 into a smaller flight bag device. It's something we might get back around to once we have Winglet off the ground.