Boy at the point when I bought the GR I am not sure glide steer and 4-wheel drive would have meant that much to me. I wonder if the list prices for G series tractors has been greater than the list for GR series tractors. As I said earlier at least my dealer had no G series tractors on display when I bought my GR. I do think I saw G series tractors in the Kubota brochure but never got to see any in the flesh. That said, even GR's were close to $8,000 tractors when I bought mine and I think they are more than that now. Not a cheap tractor by anyone's estimation at least not for a home owner.