Thanks for sharing this!<p>Why not include the cost of your time to maintain and improve the service?  Without including the cost of your own time it seems hard to make budget decisions (e.g. the tradeoff between a PaaS and using a provisioned VPS).  Even if you&#x27;re not paying yourself anything, it seems important to include what you <i>could</i> be making if you were doing something else with your time.