"Jim Stewart" wrote

From what I can tell, ADS-B requires a
mode-s transponder, a high performance GPS,
a 1030 Mhz receiver which may or may not
be part of the transponder, a fast computer
and a display.

There's no way to predict what that would
cost in 2020 except that it will be more
than $180.

The word "aviation" in the title of the device automatically multiplies the
price by 100!

I thought everyone knew that principle of pricing aviation equipment, of any
kind.
--
Jim in NC