>We have sold almost 100 licenses within a week.
Who sold them? Were you together? How much does a license cost?
>I need 500 by next Tuesday to convince my CTO to build an MVP.
Why 500? Why not 10, 235, 499, or 357?
Why Tuesday? Why not Monday or Thursday?
What are your constraints?
This seems like a strategic decision and your product/mock-up should solve that... Have you used your own product to solve it?