The price was three thousand and well worth it to us.
I would love to know how long ago you had your generator installed. Most of the posters are right about the $7000 price. However, given that this kind of thing happens all the time in the 'ville, the plumbers who install these things have increased the prices dramatically. We also had a few estimates for a simple gas line from the basement to the fireplace (about 10 feet total) and most hovered around $2000. As you can see, the "times they are a changin".
I understand that no one wants to discuss the nightmare of actually doing something that would help the greatest number of people in a given situation, but our tax dollars should go for more than speed humps and landscaping. It's time to get real.