The ZR-1 and GNX haven't really gained in value in the past dozen or so years, but low mileage GNX's have stayed in the area of $30-$40K, but ZR-1s seem to have fallen for some reason. There was a 90' ZR-1, the first year they came out, w/ 76K on the clock going for $30K and it was original and clean
I agree with the above statement, drive em' and enjoy em'
