Extremely difficult question to answer. It will mostly be justified by traction in a certain amount of time. If you receive a huge number of users in a year, this will add multiples to your valuation.

On the flip side, if you are ten years in with steady growth, the multiples will not be as high.

Industry matters, as well.

I'd say $50 million a year in gross revenue will definitely get you a $100 million buyout.