Language / Is rosetta stone any good for learning Polish? [51]

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Learning Polish with Rosetta Stone...?

I'm considering purchasing Rosetta Stone for Polish since I cannot seem to find anyone that lives nearby that is able to teach me Polish... I need (want) to learn Polish for my year-long abroad exchange trip this fall. My only current resource is pronunciation practice with my Polish exchange friend.

My main question is: Should I invest $500 in purchasing Rosetta Stone 1, 2, 3, or should I just buy the #1 and hope for the best? :P