It will take at least six months from the up-front investment to start to realize ROI. It really depends on the customer's environment and how much they automate through the solution with regard to inventory, products, and sales. 

We have received a return on investment using this solution.

I have computed the return on investment, but since Microsoft is essential software that we are required to use, I didn't factor in a significant return on investment.

I have not received a return on investment using  Microsoft Dynamics 365 Business Central.

It's good.