As you can trace my post here I was originally quoted $8k, then after battery eval - $12k .
I contacted Nissan customer service and reported it and they opened a ticket for me , worked with my dealer to explain to them the true costs.
I would suggest working with Nissan at this point and having them route you to a dealer or work with your dealer. I don’t think it should matter much where you are beyond that.
Different dealers may charge slightly different labor and core return may depend on your old battery condition. Other than that, costs for 24 kWh replacement should be in that ballpark and no more.
Everything else, I have learnt from this forum so I would suggest you read all relevant posts
I am genuinely thankful to the creators and contributors to this forum.