Ask HN: SBC with 1gig ethernet and USB 3

Is there any such product for cheap?

Orange Pi 3, which is $30. I have no experience with these, but in general, if you venture away from the most popular SBCs, be sure to check the forums to make sure there’s support to do what you want. I was using high spec SBCs for a long time but eventually decided it wasn’t worth choosing the faster ones if it meant I spent much more time building packages and changing device tree.