Congratulations! Excellent news for you. If I was in your shoes I would probably now think about selling it when it is repaired since the problem will come back eventually.
Yeah, I'm definitely considering that, but I might wait for the Broadwell rMBPs. One thing's for sure though, I'll never go with a dedicated GPU again. In every Apple laptop I've owned, from my Powerbook G4 and my Santa Rosa MBP to this 2011 MBP, the dGPU always ultimately turned out to be the breaking point.