Head surfacing pricing please

[LowBuckX]

My heads Im going to be using have fine Wire wheel scratches on the head to block surface and Id like them to be surfaced to get rid of them. It wouldnt take much because you can barely feel them with your finger nail and it is in a very small section. What would a machine shop charge to surface these heads without milling alot off.

Before you ask the drill motor mounted wire wheel I was using to clean up some carbon got away from me.



Heads are TFS 23* Aluminum units.