Up front I `ll admit to being an advocate of free market capitalism. Sellers can set what ever price thay want and the consumer either complies or rejects(for what ever reason).
Grannyring you make some interesting points concerning factors that determine the cost of a product. Where I differ to some degree is the case touted for complexity. Generaliy It seems simpler circuits/designs built to a high standard with superior parts usally sound better(exceptions of course) than their highly complex competitors. While one can marvel at the impressive engineering achievement, many of this uber technical products don`t often past the "natural" sound test i.e. tone and realism of voice and instruments.
I`ve attended numerous audio shows including CES 4 times and have heard many of the praised high power-ultra expensive components and have been rather disappointed. Obviously this is subjective, they can sound very spectacular in an audiophile-hifi realm, but deviate from what natural music really sounds like. The simpler (within reason) circuits tend to sound like the live music I`m used to hearing, organic flow and sheer purity.Ears are good true detectors. Just one humble opinion.