I think it is still a good buy. $350 for any unlocked smartphone is a bargain in today's age and the Galaxy Nexus can still fight with the newest phones
the nexus is still a good phone and the one sold in the Play is unlocked and stock so there will be no carrier bloat ware or restrictions. a phone with still rather good specs for $350 is a good deal in my book.
Compare it with other smartphones in the market that are unlocked, at the price range. It will make your decisions a LOT easier. Trust me.