The exchange holds no stock, takes no payment for placement, and publishes the method behind every number it prints. That is the whole charter; the rest is detail.
Independence
No unit stays with us for free. Anything on the bench was bought at retail or borrowed and returned, and a yard cannot buy its way onto the index or off it.
Method
One rig, one method. Deadzone, breakout force, travel and recentre error are measured identically on every unit, on the rig catalogued under pilot rigs, and a unit that has not been measured says so rather than borrowing a figure from a spec sheet.
Coverage
Two sweeps a day across every depot we track, with the full price history kept and shown. A depot that stops holding a unit stays in the table, marked dark.
Money
Depot links are affiliate links. They pay the exchange, they do not pay for rank or score, and no editorial decision is taken with a rate in front of it.