There is no way an RS3 would be anywhere near that cheap.
The way I figure is that there is a $34k premium on the TT-RS vs TT-S.
So even if there was just a $29k premium on the RS3 vs the S3 it would be $100k RRP. But the time you add taxes and onroads that would be just under $126k in NSW, plus options. But even if we halved the premium between the RS3 and S3, the car would still be $85k plus onroads bring it up to $102k plus options.
Of course you could negotiate, but still, it will have an uphill battle for general acceptance at these prices.