If there is a user that wants to talk for almos free to just one other user, Aplio phones still is a good deal.
No support, but the units are so easy to program that just few tips will get you talking in few hours.
Need one aplio phone or Aplio pro on each end.
Be aware of people selling old aPLIOS VERSION 1.5 ON EBAY.
They maily only work with other 1.5.
The version 2.0 is the most recent and stable.