On 2014-01-17, Ed Pawlowski wrote:

No one can be specific, but most of the replies gave a ball park number
such as 1 hour at your local plumber's rate. Close enough.

I learned what I wanted to know. I thought it would be much more
expensive --and it still might be-- but my fears of being hosed for
hundreds of dollars for a mere seal replacement job have been allayed.
Thank you all.

nb