Well...assuming many have been quoted from $1400-$1600 to replace the oil pump bolt I'd say it's probably more. Almost the same labor is involved but more parts....I'm
Sure it can be done cheaper by a VW shop (non-dealer) who's done it a handful of times already.
With that said, there aren't a lot of shops that have done many of these. As stated its really not needed unless its making noise.
I'm at 145k and no noise. You?