“One of the questions causing a fair amount of debate around digital marketing circles revolves around whether or not Facebook page “Likes” carry any measurable business value.”
Instead of trying to put a dollar value on a fan, this article goes into the differences between how fans and non-fans are treated by the various Facebook algorithms and the resulting affects on the deliverability of your Facebook Page updates. A keen understanding of this will help Page administrators.
The article also includes the results of multiple studies in this area. You might be surprised by the conclusions.
Article: “Social Subscribe – Why Facebook Likes Do Matter”
This article’s solid analysis is by Nate Riggs (@nateriggs) and is found on the Convince & Convert blog.