In most electronic peripheral categories, like USB hubs, the "expensive" US stuff you buy for $100 and $150 are the same Chinese internals you get for $20.
Do you know any thunderbolt hubs like that?
One starter article for how the market works - there are lots more. This one was discussed in HN too:
https://overengineer.dev/blog/2021/04/25/usb-c-hub-madness/
Now, for hubs, I didn't need a full blown thunderbolt one, but my current hub this:
https://www.amazon.com/dp/B0F5PY4F2N?ref=ppx_yo2ov_dt_b_fed_...
which works fine - I looked at some competitors with 2x and 3x the money for the same and sometimes lesser specs.