Currency (trade) is an expression of value, which in itself is always perceived. It has no material existence. My reading of Zunjine's (extremely well-argued) posts are that Apple have stimulated an impression of value in their products, through some complex union of design, marketing, customer service, etc., that is commensurate with the price they charge for them.
In my view, value is a composite of all of the things you mention ('emotional attachment, fandom and marketing influence') and more, and thus is precisely the word we should be using in this (rather tangential) discussion. Yet I would argue that value, in and of itself, is completely intangible; it is only the responses to value (i.e. exchanging several days of physical and mental labour for an iPhone) that are tangible.
This is of course, however, also my personal opinion