Sales negotiation
A client digs in on 'it's too expensive'. Instead of haggling, the salesperson refocuses on the interest ('what would make this price justifiable for you?') and offers objective criteria: market price, total cost of ownership, measurable value. The debate leaves the tug-of-war behind for the merit of the arguments.
Replace haggling with objective criteria (market indices, benchmarks); ask 'on what basis?' at each opposing position.
Escapes the power struggle over price; anchors the agreement on legitimate, defensible references.
Facing a purely positional buyer acting in bad faith, the appeal to criteria may be ignored.