Personally I don't think Google could care less how many Facebook likes or Google Plus followers you have. Getting that many genuine likes sends off many positive signals for other reasons, faking them is just a waste of money. I don't necessarily think you'll trigger a penalty but I don't think it will be of benefit either.
We don't know whether Facebook likes are a ranking factor in Google or not. If they are they will have constructed, or will construct, a system to prevent abuse. A shedfull of likes all of a sudden is an obvious attempt to game the system, which could badly affect your site. Don't even think about it.
Facebook likes arent e will never be a ranking factor: they come from a not transparent company and Google can't control the quality of those likes. G+ +1 are another thing completely: i wouldnt artificially increase them, but im sure they impact the rankings somehow, so rake them in if you can in a spontaneous manner!
Waste of money. You're paying for spam. Google never will come out and say social 'likes and RT's are a ranking factor because of people selling packages like this. Can you imagine what the social networks would become? You saw what happened when they suggested guest blogging was a way forward. It's common sense. If organically you get likes and +1' & RT's on a regular basis around a subject matter it has some say on rank. It's authority. Anyone who says otherwise isn't doing it correctly.