Pick the scope, tick what you need, see a range straight away.
They get 10% off their website build. You get 10% of what they pay for it. That is all. T&Cs apply
Nothing sours a project like a price that grows afterwards. So here is what sits outside it, up front.
Tell us what the business does and what you ticked above. You get a fixed price back within one business day, or the honest answer that it should be scoped differently.