Look at
http://www.moxmobil.de/
PERSONALLY, this offer does not interest me but here it is. Expands the offer to Turkey only. AND surprise surprise, it uses the D1 network. 39 cents to Germany AND 11 countries including Kosovo, Iraq, Iran, Russia, Romania, Turkey - land line OR mobile.
ROAMING does not seem possible.
PERSONALLY, I would think a good calling card could beat those rates. For example,
the Enjoyprepaid EZ plan offers LOCAL calling from Germany to Romania for 10.5 US cents; cell phones are 32 US cents. Similar rates for Turkey, for example (12 US to Turkey. 7.5 to Istanbul, 24.5 to a cell phone).
Now TRUE, from the MOXMOBIL mobile phone, using a local Germany # is a waste as the local call in Germany already costs 39 e-cents. However, assuming one has access to a land line at 1 or 2 e-cents per minute local or long distance rates, using the MOXMOBIL service is MORE expensive.
19.95 for starter set with 10 E balance. Use D1 refills for this service.
Stan