Seat parts ?. It's going to be same as Skoda Karoq for sure. I know you can bypass Skoda parts postage if you get parts from Skoda dealers if you are near one. That Seat parts dealer online... Horton ?. Any that advertise on the board. Probably quite a common part that goes.
I see if you Google it, you can probably import it if they are reliable.
That's where the parts department has the edge. Least on Skoda where I bought the ice scraper cheaper via Skoda parts than the Skoda version of Horton's by mail order. I'd ask the parts department of Seat / Skoda for a quote.