The Virginias has smaller (maybe half? ) operational envelope and magnitude less capability than these subs.I personally think it is a waste of money for a boutique submarine class. They would be better off buying more Virginia class.
I doubt the repairs will only cost tens of millions of dollars once all is said and done.
The USA navy is between a hard and rock place, the Seawolfs the only subs that can reach undersea cables and do other deep diving missions, and there (was) three of them only.
However the cost of repair easly can go up to the price of a new Virginia sub.