I give the cost a two out of ten because it is an expensive solution.

There is a license required to use this solution. The prices can vary, depending on your setup and the number of users you have.

The software is a bit expensive and some startup companies will be unable to use it despite its effective usage in management. This should be catered for and looked upon since it greatly affects some users who want to use the tool.

The cost of Dynamics NAV is a bit expensive. Most service packs cost thousands of dollars. However, it is a good software for managing your business activities and gives good results.

AX implementation does not cost a lot.

Depend on own own consultants & learn how to develop AX to reduce implementation costs.

Also, try to manage the number of users as that can reduce the license cost.