Reasoning
We treated each domain as a single opinion: WebsiteBuilderExpert = 0 (free plan), PCMag = 16, Trustpilot = 20. Weighted by confidence (WebsiteBuilderExpert 0.90, PCMag 0.90, Trustpilot 0.95), the weighted mean is (0*0.90 + 16*0.90 + 20*0.95) / (0.90 + 0.90 + 0.95) ≈ 12.15 USD.