The cost of conversion is more than the cost of keeping Queen Elizabeth as a STOVL carrier no matter how much the CV conversion cost has been skewed.
The point is that you are not hearing anyone commenting on the long term financial impact of F-35B yet the costs of that aircraft are increasing by the minute. Odd that we are tumbling towards a decision to revert STOVL with no apparent concern for the bigger 30 year F-35B mortgage payments for less capability.