And the ones that cost $6,000 aren't that good (although definitely good enough for hobbyists). Most of the milling machines have a really limiting range at that price point. You can only really mill out flat objects.

Take a look at the X-Carve [0] for a cheaper alternative.

There's also the Othermill [1].

[0]: https://www.inventables.com/technologies/x-carve [1]: https://othermachine.co/othermill/features/