After regretting trading our old 09 GT in my wife and I are looking to get another G8. This one is our perfect color/option combo, going to look at it tonight. Hopefully I can get the price down a bit, but I don't feel bad at 18k either.
Not a bad price at all! If everything looks to be in good shape, it's well worth jumping on. Make sure the common issues with these cars are taken care of and you'll be good to go! Good luck with your purchase and I hope everything goes well!