Most e-commerce teams know delivery issues hurt revenue, but few can put a figure on it. This tool closes that gap in 30 seconds. Enter four inputs and get an instant estimate of monthly and annual revenue exposure. No signup, no storage, no backend. Built for ops analysts who need rough numbers to justify logistics investments. Outputs include KPI cards, a GMV chart, benchmark comparison against the 5–7% standard, two findings, and a one-page PDF. Single file. Vanilla JS.