quick math: $25m in revenues, 2.5m subscribers, which makes it $50 annual revenue per subscriber.
So I am wondering is $50/year/user a high or low figure in web advertising? I am suspecting it's a high one because of the audience (hip, young and rich urban women)
Same as websites - but you track number of people subscribed and the key metric is how many people open it. CPMs are a little higher for newsletters than for websites with the same number of readers I've found (as an advertiser, not a content producer).