Yes - of course people will have differing opinions - but aggregate market demand can be different for something made with the same amount of labour - that is not an issue of scarcity.
i.e. 'most people' can view one wine as better than the other with equal amounts of labour.
Again - surely you can, if you want get into issues of 'scarcity' i.e. you can talk about production volumes etc. but that's kind of a second order issue.