In the SFWIW category, I bought into the MagicJack package a couple of months ago.
It performs as advertised.
Inital purchase is $40.00 which covers MagicJack hardware and 1st year's service.
Add a cheap hand set or even a head set and you are done.
After that it is $20/year for unlimited phone service.
An international plan is available at extra cost.
One caveat:
Your puter must be up and running for Magic Jack to function.
BTW, the installation is straight forward, even this dummy had no problems.
No, I have no vested interest in MagicJack.
Have fun.
Lew