What a guarantee would require
Control over your product, your pricing, your margin, your site, your fulfilment, your competitors and Google’s policy decisions. Nobody has that.
How the promises work
Usually a loose definition of the metric, a long enough window that seasonality does it, or brand traffic counted as performance. None of that is fraud exactly — it is just not what you thought you were buying.
What we offer instead
A published rate, weekly billing, no notice period, and the account in your name. If the work does not justify itself, you leave next week and take everything with you. That is a stronger commitment than a number in a proposal.