Oh nice, those are a good deal. Looks like the cheapest board with RK3588S announced yet, and with all that ethernet to boot! Those were just launched a couple of days ago, looks like. [1][2]

  1: https://liliputing.com/nanopi-r6s-is-a-single-board-pc-with-rk3588s-8gb-ram-and-three-ethernet-ports-for-119/
  2: https://www.cnx-software.com/2022/10/28/nanopi-r6s-rockchip-rk3588s-router-mini-pc-dual-2-5gbe-gbe-hdmi-2-1/