Each ML engineering project is different, and every organization is at a different level of maturity for machine learning.  On the lower end, a smaller effort (e.g. deploy a test version of a model for limited usage) might take a couple weeks and cost around $35k.  A larger effort (e.g. migrating several models to the cloud while implementing process improvements) might require over four months of work, upwards of 1,000 hours of labor, and cost around $300k.  These are just ballpark estimates, but you can contact us to get a better idea of the scope and requirements of your solution.