A SaaS app that’s free unless it delivers value

I have no opinion about the service described in the article mentioned below. I was just surprised by the “value proposition”: 

… Imagine an application that you don’t have to pay a penny for unless it provides measurable value to your company — and it’s up to the vendor to prove that. IT shops the world over would be a lot better off, though the entire class of enterprise applications vendors would be in dire straits if they ever made such a claim. But eGain promises just that. ..

Source: A SaaS app that’s free unless it delivers value

My suggested approach would be: If an application does not provide measurable value don’t waste any time on it, not now, not ever …