I had problems getting it installed (and play).
You are right about the internet connection there - it is not required at the moment, but it seems to be a trend nowadays - and if such protection measure was added in the expansion, I would not be able to play it.
I trust my friend, though I did not get the receipt of the game. It's the collector's edition (t-shirt, bonus material and the whole nine yards). I guess those shady guys in the alleyway do not go into the trouble of printing t-shirts, do they?
But, my request is for the expansion, not to the current version (anymore).
***Edit:
Got the info. The game is from this store:
http://www.verkkokauppa.com