Microsoft has launched Office 365 Services Cost estimator. This calculator is for estimation purposes only; actual costs may vary.
To estimate costs using this calculator,
1. Choose plans and stand-alone services
2. Enter the number of users for each
3. Check results and see how affordable Office 365 can be
Note: Microsoft provides this estimate solely for informational and estimation purposes and actual costs may vary. Lower prices may apply to customers enrolled in Microsoft Licensing programs. All pricing in USD.
You can access the Office 365 Services Cost estimator, here.