For anyone in Sydney, there's a guy called David who runs a mobile service for touching up scratches. I think he pretty much covers most of Sydney. I had a scratch on my bumper and he buffed it out and resprayed the whole bumper for $100. Looks perfect to me. Only thing is that he can't fix up metallic or pearl colours. My Skyline is just a flat red so he was able to do a really good job. His mobile is 0410 668 793.