The document estimates the costs to build a typical web startup over 6 months. It breaks costs down into 3 parts: costs of having a company like accountancy ($300/month) and lawyers ($500 one-time); costs of building the product like a graphic designer ($1000 one-time) and front-end developer ($700 one-time); and costs of production environment like a domain ($5 one-time) and server ($20/month). The total estimated cost to build the startup over 6 months is $4,625, which the author says is an amount that could be invested without raising money from investors.