Microsoft's bCentral offers company's first real stab at ASP model: "About 1.6 million users have registered for some bCentral service; about 60,000 are subscribers to the paid services"

That would mean a 3.75% customer-to-user ratio. If they pay about $25 a month, that translates into $1.5M or $18M a year. About what Microsoft as a whole sells every 6 hours, but quite significant if you compare it to other ASPs.

07/12/01 update: ASP Revenues Soar, Profits Coming Soon will give you a sense of what the biggest ASPs are making.