tracfonewireless.com/byop/ and activate most clean-ESN, non-LTE Verizon phones on TracFone's $7/month and up pay as you go plan.
BYOP worked well for a couple days after it first launched, then something happened and no matter what phone you tried to activate, the site would responded with "We are sorry, the Serial Number you entered is associated with another account or is already active. Please try again".
It looks like the program has been fixed and relaunched. TracFone dealers received flyers (image) this week advertising BYOP and several HowardForum users posted that they have been able to activate BYOP phones over the last few days. Successes included a Droid 2, Droid 3, and another Droid 2. The successfully activated phones were all used. Attempts to activate brand new phones failed and TracFone support told another HowardForums user that new, never activated phones were ineligible.
So at this point it looks like it should be possible to activate any used Verizon non-LTE Android phone with a clean ESN (not reported lost or stolen or flagged for non-payment) at tracfonewireless.com/byop/ or a TracFone dealer. The TracFone site charges $9.99 for an activation code and there are no refunds if the code doesn't work.
TracFone BYOP uses the same "triple-triple" billing system as TracFone's Android phones. That means that a $19.99 "60 minutes" refill gives you 180 minutes, plus 180 texts plus 180 MB of data good for 90 days. When you add more money, unused minutes, texts and data "roll over" and get added to the total available for the new plan period.