What it costs to run a vibe-coded app

The catalog prices building, pricing, and selling, and never once prices running. The managed default keeps a small app at $0 while it is a hobby, then sets a $45 floor the moment money changes hands. A plain server runs the same app for roughly six euros at every stage. Each side wins a stage, and the number that flips the math at scale is the one nobody quotes: the marginal transfer rate.