Great article. This is exactly how I’m thinking about my unit economics for my products. I’m just launched a SaaS product for building referral based pre-launch campaigns called http://www.actionpages.co. I’m also opening up a beta for an API and Plugin that allows you to embed pre-launch campaigns and creat custom refer a friend features in any web/mobile app or website.

Both products start at $49 / month!

My goal is to get to $1 million in revenue.

Thanks again for writing this. Going to share in a couple of forums I belong to.