Cost Efficiency Score tells you how much quality you get for every dollar spent on a campaign or provider.
Formula: ((DA + PA + (100 – Spam Score)) / 3) × total backlinks ÷ campaign cost (USD)
We average Domain Authority, Page Authority, and inverted Spam Score into a quality factor (0–1), multiply by the number of backlinks, and divide by what you paid—so a higher score means more quality per dollar.
How we calculate it
- Take the average DA, PA, and Spam Score across backlinks.
- Quality component = (DA + PA + (100 – Spam Score)) / 3, normalized to 0–1.
- Efficiency = (quality component × total backlinks) ÷ campaign cost (USD).
- If cost or backlink count is missing/zero, the score is 0; higher values indicate better efficiency.
What it measures
It’s a quality-weighted links-per-dollar metric. High DA/PA and low Spam Score push the score up, while higher costs or spammy links push it down.
Why it’s useful
- Benchmark vendors: compare campaigns or providers side-by-side using a single, cost-aware metric.
- Spot value quickly: see which campaigns deliver strong authority per dollar.
- Guide budget shifts: reallocate spend to vendors with the highest Cost Efficiency Score.