Cost guides and price research

The calculators do the arithmetic; these pages explain what goes into it. Read them when a result surprises you or before you choose the assumptions for a test.

Guides explain one metric or decision each, with a worked example labelled as illustrative. Research pages compile published provider prices and terms with the date they were checked. None of them is a close-rate benchmark: we have not measured lead outcomes, so your own results are the only conversion data that should go into a model.

Prefer to start with numbers? Go to the calculators, or read how they are built and tested.