CPR (Cerebro Product Rank)

CPR models the launch math every giveaway-era seller ran by hand: the approximate unit velocity, attributed to a specific search term over roughly an eight-day window, associated with breaking onto page 1. It scales with the keyword's volume and competitiveness.

Use it to budget launches honestly — CPR × contribution margin ≈ the rank-buying investment a keyword demands via deep-discount traffic or aggressive exact-match PPC — and to pick launch keywords you can actually afford: mid-volume terms with attainable CPR beat prestige terms whose CPR exceeds your inventory. It is a model, not physics; treat it as sizing, not prophecy.