The Trig TN-70 is only a GPS, not an ADS-B transmitter.
The NGT-2000 comes with an internal GPS.
Aspen ATX100G sells for $1850 at
Avionics Source. Perhaps that will meet the Lynx price match offer.
The disadvantage of ADS-B units that receive only 978 Mhz is that they can not receive traffic directly from other aircraft transmitting ADS-B-Out on 1090 (the majority). This is a problem when out of range of a ground station.
If your aircraft is not equipped with a display for traffic and weather, you might consider a portable display and a DUAL band ADS-B receiver, i.e.:
pingBuddy, Homemade Stratux, GDL39, XGPS190, Stratus 2S, iLevil 3
These receivers vary in price from $150 to $1300.