Notable Power Flarm saves - Is it 'worth it'?

"Surely you're joking? And if not, how is that possible?"

Nope. No joke. As to "how," you go to FAA dot Gov and download FAA Form 8130-6 "Application for US Airworthiness Certificate" and fill it out. Your aircraft must be in compliance with all Airworthiness Directives. You need an inspection by a "Certificated Mechanic," possibly an inspection by an "FAA Designee" or FAA Inspector. There may be a Flight Test period (generally five hours TT for Phase 1). Your Operating Limitations will be spelled out as part of the new certificate and will place certain restrictions on use of the aircraft. A yearly Program Letter must be filed with the local FSDO.

Going from Standard Category to Experimental is relatively simple. Trying to go from Experimental to Standard is nearly impossible, so this decision should be carefully considered, as it may affect the value of your aircraft. However, many gliders operate under "Experimental" limitations without much in the way of restrictions. It is just that certain things are easier to accomplish mechanically with an Experimental Certificate. In this case, as Darryl states:

"For 2020 Compliant ADS-B Out in a certified glider today you are looking at: Trig TT22 (~$1,900) and TN70 (~$1,900) plus install costs.

For 2020 Compliant ADS-B Out in an experimental glider today you are looking at: Trig TT22 (~$1,900) and TN72 (~$350)"

The price point of the TN70 at $1,900 vs $350 for the TN72 is what is driving my decision.