“What is JAJAH Free Global Calling?
JAJAH Free Global Calling allows you to make free local and international phone calls. It applies to land line and mobile calls to and within: the United States, Canada, China, Hong Kong and Singapore; and it applies to landline calls to and within Australia, New Zealand, Taiwan, the UK, Germany, France, Italy and most other European nations.

It applies when both call participants are registered and active JAJAH users. In countries where free phone calls are not available, or if someone is calling a non-JAJAH member, calls are subject to JAJAH’s regular low rates.”

I am not sure you where you got 2 eurocents a minute from. UK Landline to Luxembourg Mobile is 18.11 cent per min ex vat. From a UK Mobile its 29.58 cent. You can get call cheaper suppliers then that .