On Monday, August 3, 2015 at 3:53:38 PM UTC-4, Darryl Ramm wrote:
... I expect the best that would happen there is that
TABS Class B GPS device manufacturers, and maybe others,
will produce even lower cost "non-TSO" TABS GPS sources.

For example, probably:
http://newsroom.garmin.com/press-rel...w-capabilities

.... The GPS 20A, GA 35 WAAS antenna and install kit is available for $1,225*
.... anticipated to become available Q3 2015.
.... For additional information, visit: www.garmin.com/experimental.