Forecast quarterly revenue 4-5 years out using a mix of company and industry growth estimates. Assume a net profit margin of 15% or so. Take that profit amount and value it as a perpetuity. If they are successful that's what a buyout would look like, and therefore mkt cap as well. Of course all cards are off the table if profit isn't reached soon.
There are company's with higher OS then vpor and its a higher pps. If you haven't noticed the OTC doesn't make sense. Look at mcig. How is that thing where its at?