I'm aware of the distinction - but in this case - to me at least - the cost and the value are the same. The value of streaming songs is exceptionally minimal when they are easily acquired for free via other means. The only value add in my mind is the convenience of not having to download albums in the first place. The value of that convenience is tied very closely to the cost of providing it as I could set up my own streaming service for personal use "at cost" so to speak with a cheap vps and a collection of downloaded music - or use something like iTunes match which costs ~$2.00 a month, if I'm willing to put forth the effort to acquire the music initially.