$300/month Grok. What would you do with this?

The most expensive Grok package is $300/month, which was released yesterday as part of the Grok 4 launch. I am thinking this can be an insanely good value if you know how to use it, or a wase of money. What would be a good use for this? What use would justify the $300? The low-end Grok can already do a lot. What are some use cases to justify paying so much.