1) Depends on what you mean by "worth it." Although the consensus seems to be that the $60 package is a very good deal, the $200 is an okay deal.
2) Yes, $1 = 100 Zen (with small amounts of bonus for large purchases.
3) Better for what?
"Participation in PVP-related activities is so low on an hourly, daily, weekly, and monthly basis that we could in fact just completely take it out of STO and it would not impact the overall number of people [who] log in to the game and play in any significant way." -Gozer, Cryptic PvP Dev
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2) Yes, $1 = 100 Zen (with small amounts of bonus for large purchases.
3) Better for what?