To all of geeks:
take a look onto this brother/sister page:
http://prepaid-wireless-internet-acc...nt.com/?t=anon
It is not referring to any international card - just growing number of national, but all those who trace interational mobile roaming issue know, that data (incl. SMS, MMS, ... ) weren't subject of EU regulation.
Be brave, take a look onto your countries tariffs for mobile data roaming ...
I plan to arrange link to comparing calculator - domestic vs. roaming use of data.
Some suggestions of how to define few typical usage patterns/schemes are welcomed:
for all combinations of short (up 1-2 days) or long (about week), private or business trip.
Patterns should include, except data itself, also SMS and MMS usage during the foreign trip.