Sales & Marketing professionals are pretty darn good at discussing functional value. You know, the speeds and feeds of it, how your suff is bigger, better, faster than the incumbent. Many call these the speeds and feeds of technology sales, often expressed in terms of the many TLAs - Three Letter Acronyms that every industry enjoys.
Yet functional value is simply a means to an end, something by which the customer, or your customer’s customer can enjoy tangible improvement. This may be Emotional value or it may be Economic value. Typically a hybrid of both is needed to get the deal done an the customer on their way to enjoying the fruits of their investment.