Duck down duvet prices vary wildly; will there be a big difference in quality?

I searched on Naver to buy a duck down duvet, and the price range is huge.
However, there's no visible difference on the screen between a 500,000 KRW one and a 50,000 KRW one.
I read the description for the 50,000 KRW Hilton duck down duvet, and it says it's a premium duvet supplied to hotels, which makes me hesitate.
The name is even Hilton, after all.
But is it okay to just go ahead and buy a 50,000 KRW duck down duvet? It looks perfect in the photos.