I've seen an ad for this being "free for a week" 3 different times in 3 different weeks. I was lucky enough to find a code for the first season when I got a pre-owned copy of the DVD version of this game at Gamestop, so I'm going to finish all those achievements before I try the free trial of this. Hopefully I'll be able to get some season 2 achievements from the trial.
Also I live in the US, so it may only be for us, but who knows for sure.
Achievements are my drug and addiction.