Really? That is pretty bad, which carrier is that?
I am in Sweden as well, and being a very light phone user I used to be on the cheapest Comviq plan. When reading the news today I checked the Comviq page and learnt that my plan would no longer work outside Sweden, i.e. no roaming at all. I had to switch to the next higher plan, which has the roaming, and more included minutes+SMS that I have no use for. So for me this effectively meant a price increase, too, but I had to make that switch and confirm it - no automatic extra charging without my explicit consent. Is that even legal?