Hello everyone, I'm from Italy. I have ten 26W SOX-E but I don't have ballast + igniter. Is somebody of you able to supply me with one piece of each so that I can turn on my lamps? Or point me out on the web where to purchase one at not exaggerated prices? Thanks in advance

U can get get a Fluorescent instant start 2x 32 watt ballast
From the US.  Such as the Advance Intelivolt 32 watt x 2 ballast
It will have enough ignition voltage to strike them with both lamp
Output combined.  And these  ballast will run 120 to 277 volt 50/60 Hz . that 26w Sox E is made for electronic ballast.’

Importing from the US won't save you money over buying within the EU. Try https://voorraad.dbl-verlichting.nl/ - they have both inductive as well as electronic ones available for prices between 15 and 60 euro.