This system has been very helpful in our research group as it allows us to quickly find documents with multiple terms or phrases through one interface without having to go back-and forth between applications like EndNote (which we used previously).
It's easy enough that even someone new to using computers can learn how to use this application. The cost could be lower if they allowed users access at no charge but I'm not sure why you would want people accessing your product without paying you anything? We're able to look up articles much quicker than writing out each individual word and then pasting into Google Scholar individually which helps immensely when researching many different topics as well as working collaboratively since all of my classmates are also computer savvy.