After a bit of investigation, I've found that the RS would probably be sold around $45k (also because it's being imported from the UK and they're notoriously known to charge high prices!).
Couldn't get even a rough figure on the Cosworth because the people I've spoken to aren't convinced that Australia has the market for it (that is, would people actually pay the price that FTE would charge it at).....but I believe otherwise!

Hey, I thought the Mustang Cobra was charged far too high at $90k considering it's performance but they've sold out so I guess that proved me wrong!
Most popular release date I've heard is mid-2002!
Hmm....I have my doubts about this one and would have to say probably 2003 if looking at it realistically! But hey...as long as it reaches our shores...I'll be :D