So I got a quote for 65 mm T800 wheels with steel spokes and a 54T ratchet, priced at $754 shipped to the EU. The estimated weight is around 1550 g.
That felt a bit heavy to me, since my current 65 mm wheelset with steel spokes weighs about 1430 g — although it’s only 28 mm wide externally.
I then asked for the same specs but with carbon spokes. The weight would drop to 1400 g, but the price goes up to $945 shipped.
It’s a bit more expensive than I expected, so I’m still debating which option to go with.