Corporate filings with the Securities and Exchange Commission can reveal a wealth of data, some of it quantitative, some of it qualitative. In some cases, information can be a mixture of both and must be guesstimated rather than solely calculated.
So it is with Amazon, and specifically Amazon Prime, the subscription service that has been some rocket fuel for growth at the company as it cements relationships with consumers. And in one recent filing with the SEC, Amazon has proffered a “retail subscription services” segment that contains Prime, among other operations.