Why does wool carpet usually cost more than man-made carpet?
There are several reasons for this. Firstly, wool carpets have specific benefits - they are more resilient to flattening and compression and hide dirt far better than man-made fibres. However the primary reason for the greater cost is that they take a lot of effort to make properly. Also, wool often has been be transported long distances - for example, the best wool for dyeing comes from New Zealand.