1. Value-based differential pricing, where prices reflect local willingness-to-pay for health and other value elements, is a theoretically robust approach, though many countries currently use therapeutic added value plus price bargaining.
2. Measurement of relative health gain will remain important, but broader definitions of value need further development, moving from listing to measuring to weighting different factors.
3. The UK experience shows measuring broader value factors is possible, but weighting them explicitly makes preferences and social welfare functions clear and may cause backlash without understanding public and patient preferences. A deliberative process combining societal weighting and structured decision-making is needed for fair value assessment.