A four-hundred-percent loan is not a mistake in pricing; it is the product working exactly as designed. This article explains how high-cost lending is structured, why the fee looks small and the annual rate looks impossible, and where the profit actually comes from. It follows a hypothetical borrower through a three-hundred-dollar loan that becomes eighteen hundred dollars to show the mechanics of the rollover cycle. It explains the disclosure that must be given and what it means, the practices that are unlawful even where the rate is not, and the two structures lenders use to avoid state rate caps. It covers title loans, where the collateral is the car the borrower needs to get to work, and the special protections that apply to service members. It closes with the exit routes that actually work, in the order they should be tried.