How much does it cost to sew on a patch?
Sewing on Patches
In general, a seamstress should charge at least $3 for each patch, but even that is not enough. This sort of sewing requires one to be quite precise, so extra effort is a must. Up to $10 is a good price if we are using a sewing machine.
Where do you sew on army patches?
Using either thread the color of the area you will be sewing or clear thread, use your sewing machine to sew the patches to the uniform. Sew just along the inside edge of the patches. Backstitch the beginning and end of the stitch to keep the thread in place.