Yeah it probably sounds like I am hating on it a bit much from my last post, but the actual fact is I have owned pretty well every SimBin game since they started, including when GTR was just a mod for EA F1 2002, so I think I give them a fair bit of love. But at the moment this just feels like a cash in, until they start putting in real features like racing with AI or proper multiplayer racing. At the moment it is no more that a time trial game, that is charging you money for each car and track. And unlike iRacing these tracks are not laser scanned to my knowledge, and really dont compare to the quality of iRacings track, which is one of the main reason to validate handing out money on a track by track basis. Then as Vital has said also, the handling just isn't all it could be, it tends to be another one of these "floaty" feeling race sims, though it does vary from car to car for the quality of "feel".
Once real features are added in to make this a proper title, it could be used to justify its flaws in other areas, but until then they are asking a lot for very little in return, if you want to play more than just the free stuff.