Costs are regionally driven, house type driven, extent of damage driven, specfic locale condition driven.
Where? What construction house?, Basement? Finished Basement? Etc...
I replaced around 22 ft of 4x6 sill in a brick house with a basement. Along with some joist work, stud work and second floor rim joist work. Job ran $4500.00 on LI, NY about 10 years ago.
Consulted on a job in Muttontown, NY where a very extensive structural job ran around $15,000 in 1999. This was a one story ranch in a very expensive area.
Ron

Job is on LI as well. It's a two story cape with a half finished basement. I'm trying to get contractors of my own in at this point to assess the damage, but seller's gotten quotes for $2000. We only have seen one area of damage of approximately 8 feet of the sill in the unfinished area, but are having a trusted termite inspector come in to look at some of the areas in the finished basement (taking down cieling panels and such)

Perfect Larry I would be willing to bet the job is long since complete as they made the post in 2007!!!!

Where are you based, Larry?