Where did you find it for $700? I am assuming we are talking about the ADS600-EXP. On the Navworx site the unit itself is $1149.00. Then you have to add at a minimum the TransMonSPE option unless you already happen to have one of the few new transponders that will interface with the ADS-B unit. With that, the GPS and UAT antennas the setup prices out at more than $1500.
I have been watching this for a while as I have one experimental and one certificated plane to equip. It looks like I will be doing something different for each as the experimental may have lower cost options. I am waiting for a couple more years to see what happens. I am curious to see if Google and others will follow through on their claims of bringing a less expensive stand alone option to market.
Q-1 partially constructed
Avid Flyer Model C Speedwing
Grumman AA-1 Yankee
That is the winner at $700. Uses your existing (old) transponder, weighs a pound. Looks like you need to install a GPS antenna and a transponder type antenna. It outputs a wifi signal to your tablet to display the traffic. I use an Android tablet with AVARE software. AVARE is free Android software for navigation, flight planning, has airport facility directories, IFR charts... Really, it's free but most people make a donation to the developers.
Now will it drop in price as we approach 2020? I'm going to hold out a bit. Thanks Jerry for the info.
Mike Dwyer Q200 N3QP
Q200 Website: Mike Dwyer's Q200 Site