I have personally recalculated and vetted some of the reported savings, and the solution’s calculations are spot on.
Without the software, we were not doing very well. The improvements it has made and the money we have seen come into our organization have been amazing. I would say that mirrors the comments of everyone. They love the software and are happy to have it.
In terms of the vendor’s ability to optimize ordering and avoid missing savings opportunities, the vendor is very impressive. They know what they are doing.