Hi guys, I'm in Victoria. I just bought an 07 Yamaha R6 from a guy who didn't include the road worthy certificate. The battery was flat and I had to push start it. So I brought the bike to Geoff Taylor Motorcycles for an RWC, thinking that it would cost less than 100 bux as it's all stock. They told me they had to change the battery as it dosent charge. And charged me $320 on top of the RWC fee (which was $72 bux). ](*,) Am I being ripped off? They said to change a cheap Taiwanese battery cost $140. and the $320 was the cost of a genuine battery. Should I refuse to pay the money? THanks guys.