The default "best overall" ranking uses these factors: pricing 35%, user experience 25%, medication variety 20%, insurance acceptance 20%. Each provider scores 0-10 on each factor, then a weighted average produces the composite.
Variant rankings reweight: "Cheapest" → 70% price / 10% rest each; "Best experience" → 60% UX / 13% rest each; "Most medications" → 60% variety / 13% rest each; "Insurance-friendly" → 60% insurance / 13% rest each.
The formula applies identically to every provider, regardless of affiliate payout. The methodology page documents every input and provides the raw scoring rubric. Editorial team updates scores quarterly.