Whatever the price, ugh, what a sucky job to do; I helped Morris replace some back in the day (mid-late 80's) on a 690 and because I was younger, more limber and weighed ~80 lbs less I was the best candidate for the "grunt work" of the job. My arms were sore for days after that job having to squeeze in those inspection/access ports.
In reality, $3k doesn't really sound that bad (not sure about the install cost though).
Roy
