In looking for replacement original aero style wipers for my Skoda Octavia cheapest I found were these:

Bosch Aerotwin catalogue at the bottom of this page:
Bosch Automotive Aftermarket - Windscreen wipers

Front
On ebay search worldwide delivered to Australia for 'BOSCH A937S' (the RH drive front kit which includes both wipers). Check the catalogue for the model for your car.

seller a1carpartsdirect

Item title 'Audi A3 Oe Style Vehicle Specific Twin Flat Blades' $22.50 + $12.20 shipping (no discount shipping multiples).


Rear
On ebay search worldwide delivered to Australia for 'BOSCH A400H' (the rear wiper). Check the catalogue for the model for your car.

seller xvw-de

Item title 'Skoda Oktavia 1Z+ Combi AEROTWIN-Wischerblatt A400H neu' $5.70 + $9.20 (multiples free). I got 4 for about $35.