The Revenue Cycle Modeler is available with your subscription. Learn to take advantage of this free component of the Marketo Revenue Cycle Analytics to set up the foundation for measuring Marketing's impact on revenue."

but then when i read further or try to watch a video they all talk about revenue cycle analytics. 

so my question is : Is there any reason to set up a model if you don't have Explorer or Analytics?

it seems not but hoping someone can tell me for sure as i can't find anythign from Marketo that clarifys this.