Do you need data recovered? Or do you just want the drive to work again? If its the latter, buy a new drive. Hard Disk recovery services only worry about the DATA not the drive itself.
That being said, if the drive has to go into the clean room, expect to pay out the nose and receive what's akin to a ransom note for your data. Clean rooms aren't cheap to maintain and what Drivesavers and their ilk do in the clean room is repair your busted drive just enough so that the data can be recovered.