If you want to spend that much look at the Pacific Coast ones. We get ours at Costco, but at least online all they have right now is twins. We've been through several over the years (multiple rooms, and we swap them out every 3-4 years) and they hold up really well (we machine wash them, idk what the tag says to actually do) and I love them!
I definitely recommend getting the nicest one you can afford. We had a cheaper one years ago and it just didn't hold up. Our current one, we've had for years and it's still exactly how it was when we bought it. It does require dry cleaning, but like PP, we use duvets and clean those regularly, so it's not that much of a hassle.
I got a Charter Club comforter from Macy's on clearance a few years ago (I think it's a level 4). It's super warm and has held up well, but I've never washed it and wouldn't even try to.