What it costs to launch and run until revenue, from one-time and monthly costs.
One-time costs: registering the company, a logo or design work, a laptop or equipment, legal templates. Monthly costs: software and hosting, domain and email, AI and API usage, marketing, accounting, and any freelancers.
The number that matters is the total until revenue covers the monthly costs - not the launch cost. Most products take longer to earn than planned, which is why the 20% buffer is there.
Before the first paying customer, keep costs close to zero: free tiers, no paid ads, no custom design. Spend on what tests demand fastest - a landing page and conversations with possible customers - and on the rest once people pay.
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