Tried Aliexpress or Ebay?  

Often good value bolt on parts. 

You would probably find generic ones to fit which would be just as good but wouldn't have the logo!

I just used http://partzonline.co.nz/ to get some top-tier Bosch windscreen wipers for my Octavia RS and saved myself a good $50 on what the dealer wanted to buy and fit them

I bought a set of 4 for our Kia Sportage a few years back off ebay. I'd check there - was about $50 from memory.