$400k sounds about correct for Sydney plates. Sydney plates have always been cheaper than Melbourne and Brisbane since the massive oversuppy introduced to cope with the 2000 Olympic games crowds. As you can see from TigerBoys post, plates can fluctuate very quickly for reasons beyond your control, usually state snd federal government policy change. Good investment return however can be considered risky. Thats the reason banks will only lend 50% and will not refinance against future capital gains. Id say less risky if you planned to work on it yourself.