I personally think 350$ is the absolute maximum they can go with. 400$ is too much. Besides, most rumors/speculations I've seen seem to go for the 300$ price, which I think it's the most likely.
Either way, there's one thing I still haven't seen here discussed which is of the most utterly importance: Karen! The Mario-playing, rooftop-partying woman from the commercial! She needs to be our 2nd queen! (right after Lara, of course
)