What'd it cost you all-up, Dale?
We're doing the install this weekend so obviously I don't have an
installed price.
The Garmin 320A transponder and encoder unit (which just passed its two year certification) was gifted to me by a good friend that took it out of his Rockwell Commander and gave it to me. Even more than that he made the harness for me as I eliminated a lot of weight by not using the tray that came with it. He is very good at electronics having once worked at a high level position doing such.
The UAVIONIX Bundle EchoUAT with SKYFYX-EXT all in one receiver unit is sold most places for $1399.00. Adventure Pilot (iFly GPS folks) had a sale for $50.00 off. I also bought a single coax to go from the Echo unit to the UAT antenna for 19.79 & tax but no shipping. So at the end of the day I should get it done for ~ $1375.00. That's still good money in my part of the economy but being experimental beats the daylights out of adding ADSB to a certified aircraft.
Nice thing about the Echo unit is that it broadcast both frequencies via Wi-Fi to the iFly 740b for traffic and weather allowing me to remove the Stratux unit I use now. I actually might lose a few grams of weight in the swap. Not sure exactly where these parts are going on the airplane just yet ...