MOV surcharge varies on a variety of factors like the product type, order volume and factory allocation.
Typically ranges between $12k USD to $15k USD per PO.
If you were to run a back of the envelop calculations, assuming 3 to 4 months of production run timeline, this comes around $3k to $4k USD per month, just enough to keep the program financially viable and yet not cutting corners in the service levels or deliverables quality.