Looking at the insulator parts here it seems, the $400 to $1100 is reasonable
Looks like there’s nine mounts so I’d clarify what are being replaced. I don’t know what the moving control rods are. But there’s four insulators which I’d guess are for the vibration.
Under each image is a drawing, tap that and you’ll see all the parts that are used and give you a better idea what the costs are.
Shops in my area charge $130/hr so $400 would cover at most two mounts
Looking at the insulator parts here it seems, the $400 to $1100 is reasonable
Looks like there’s nine mounts so I’d clarify what are being replaced. I don’t know what the moving control rods are. But there’s four insulators which I’d guess are for the vibration.
Under each image is a drawing, tap that and you’ll see all the parts that are used and give you a better idea what the costs are.
Shops in my area charge $130/hr so $400 would cover at most two mounts