No need to get a liter bike just get a newer 600. My has 100hp and that's plenty for me right now. Plent of getty up and go. If I'm correct mine weighs around 450 I think and feels light aluminum and alloy metals help the weight stay down. As far a gearing and speed mine does 70 in first almost redline ( don't recommend doing that often)
Guy won fair and square. It's the dealerships fault they didn't list the auction the right way. Guy still paid close to the original price Ebay has rules and stipulations as a buyer and seller. The selle is calling foul because they made a goof as to what Ebay and the laws have to go will see what happens next.