I had a 2007 MacBook Pro, it had the original round of Nvidia issues. I got one from a friend in 2013. Originally I was going to use it as a parts machine because I wanted the CD drive, but instead I realised it may have the Nvidia issues. I brought it into Apple and it popped for the issue, so they sent it off, I got it back and it was fully functional again. No charge.

To this day it still works without issues :-)