The Swap program

One linear funnel: pick what you want, offer your old device, get a rough range, schedule a visit, get a verified value, pay the difference, take delivery.

Placement is free. The instant on-screen number is a non-binding range. The only binding number is the verified value set by the agent on-site, within a ±10% guardrail with a logged reason. The price difference is computed server-side and never trusted from the browser.