Consider the cost beyond the constraints of 'practical value.' Think of them as 'functional art', and as with a piece of fine wall-art or metal sculpture, attribute part of their monetary cost to aesthetic value.
To a small group of discerning owners their capacity to elicit emotional pleasure comes from the eyes as well as the ears. (Not to forget the bragging rights they afford in a capitalist society.)
To a small group of discerning owners their capacity to elicit emotional pleasure comes from the eyes as well as the ears. (Not to forget the bragging rights they afford in a capitalist society.)