Analysts do exactly this. They pick a handful of metrics and produce a range. For an IPO, this information is usually published by varying sell-side firms for

Analysts do exactly this. They pick a handful of metrics and produce a range. For an IPO, this information is usually published by varying sell-side firms for the benefit of their clients and to attract new clients (unless they are underwriting the deal then there's a lock up period - 45 days, IIRC). The company itself will also have a slide deck for its pre-offering road show that has this analysis done by management. You can usually find these slide decks on an investor relations website or on the SEC Edgar system. It also may be in the SEC registration statement under management analysis - or even under risks.