Lee McGee wrote:
If ADS-B technology costs $18,000 today, that will be $1800 or even
$180 in 2020.

I work in the high tech computer industry. 5 terabytes of disk
storage cost nearly $1,000,000 in the year 2000. Today, in summer
2007, we just bought 7 terabytes for $11,000. This is not a typo. The
technology is similar.
Lee McGee (yet another Lee)


Very unfortunately the prices for certified aviation electronics hasn't done
the same and there is no reason to think it will in the future.