Does Carmines serve family style only? or individual dinners? How expensive is it?

Everything is family style portions. Not expensive for the quantity and quality of their good.

The plates are very large and can be shared. It's fairly expensive because it's located right in times square and is rather iconic.

Yes, it is family style only, it is pretty expensive, I had ordered 3 plates of food and it fed 5 people, out bill was about $104 but it was well worth the cost.