Not an expert but I would think an indy shop would charge the best part of a whole day at the hourly rate. That having been said, I saw a couple of techs doing it together change one on my W202 in about an hour. It was practically done by the time I came back with pizza and beer.

__________________
Scott in MD/DC
94 E320 Wagon
"Money can't replace it, no memory can erase it
and I know I'm never gonna find another one to compare"-LW
85 TDT project (stay tuned)
W201, W202, W126 and lotsa VWs