I am writting to let you know that everything went well.
I used the online banking system of Alpha and the charge is as low as you mention, nothing like the 15e they wanted at the desk.

Nordofoto send me an offer as well, unfortunately too late, as I had placed the order with PhoBaTec:
200x ILFORD Pan F 120 2,19 Euro without 19% TAX (2,61 inclusive)
300x ILFORD Pan F 120 2,09 Euro without 19% TAX (2,49 inclusive)
The shipping costs for this article would be 31,50 Euro without 19% TAX (37,49 inclusive).

So, in all, you can get very cheap film in Europe if you buy in quantities.