Hello,
So after I read it, I thought of a question, correct me if I'm wrong. The conclusion in this sentence is that the option "value for money" already exists in the system that is running now, but the seller cannot see it, because it is separate for customers only (private). Now it is a part of it that the seller can see. based on this statement the reason is in order to get "more insights into customer perceptions and make them more transparent"
now the question is:
1. In the current system, "value for money" has no effect on public ratings, am I right?
2. Then in the next system it actually has an effect on the rating. This is a difference that I think is not explained instead of directly offering benefits that I think are fine as long as you don't let that as part of influences the rating as before.