Investopedia weighs in on the pros and cons of varying approaches: Business valuation is never straightforward – for any company. For startups with little or no revenue or profits and less-than-certain futures, the job of assigning a valuation is particularly tricky. For mature, publicly listed businesses with steady revenues and earnings, normally it’s a matter of valuing them as a multiple of their earnings before interest, taxes, depreciation and amortization (EBITDA), or based on other industry specific multiples. But it’s a lot harder to value a new venture that’s not publicly-listed and may be years away from sales.    TUTORIAL: Valuing Employee Stock Options…