Elastic Search has provided a valuable return on investment by enhancing effectiveness and aiding in learning about security features. It has saved me an estimated couple of hundred dollars in both time and money.

Since we are paying more for the license, we have not seen a very high ROI. 

We have seen an ROI of 50% at least.

A stack like Elasticsearch that enables heavy lifting of the data effortlessly comes with its intrinsic yet obvious ROI. If one is not able to realise the ROI it means either the data is bad (garbage in, garbage out) or the stack is not implemented properly.

It seems good in terms of return on investment. It is a monitoring solution, and it triggers alerts before something happens. For example, it triggers an alert when the space in Windows reaches an 80% limit. I would say it is a good investment. We are able to fix things before they go wrong. If we didn't have Elasticsearch, things would go wrong, and we would be spending more time fixing them later on.

We don't integrate Elasticsearch on enough systems to complete the estimate of ROI.