quoted from that website in the link above
''We thought we’d heard the end of the story, but the Polo R rumour book has opened again, although once more, it’s not good news. Recent reports state that the road-going Polo R was to be based on the limited edition, 252bhp left-hand drive-only Audi A1 quattro. That car costs £41,020, which would certainly price a similarly-expensive Polo out of the market. Volkswagen has reportedly realised this, admitting that the number of potential buyers for the car would be very limited. The Polo GTI only makes up 1 per cent of Polo sales in the UK.''
So like i said its going to be a similar car to the A1 quattro and pull a price of roughly the same kind of money. There isn't a market for both cars form the same company.
the quattro sold out cos of its name/heritage despite the stupid price tag.
people won't pay a similar price for a polo and like i said they won't want to step on the quattro's toes or else its instantly less exclusive/desirable/valuable as it was without a polo R.