I took a small patch of the old carpet with me into the city yesterday, and the first place I stopped at was able to match it up pretty good with a short roll they had in stock.
And I didn't need very much. For the carpet, we are only replacing the section that goes behind the front seats and back to the entrance steps. The rest we are replacing with the fake hardwood flooring that I had put in the kitchen two years ago and we're going to run that stuff right through into the bathroom. And we're leaving the old carpet in the bedroom because there's nothing wrong with it. Of course I'll post some before and after pictures, but not until the job is done.
So, I got an 8'x6' roll and some good quality underpad for a total of $70. Not a screaming deal, but not bad either considering the match is very close.
So...off to do today's job!