I've got a Rock64 SBC I don't need anymore.

• Specs at https://www.pine64.org/devices/single-board-computers/rock64/
• Quad core ARM64
• Has the 16GB eMMC card (although it's probably easier to boot off a normal microSD)
• 4GB RAM
• 2x USB2.0, 1x USB3.0
• 1x HDMI
• Gigabit Ethernet
• 1x NZ power supply
• Small Plastic case, and the original see-though acrylic case (missing a couple of screws)

New this was about USD70 plus shipping.  I'm happy to sell it for NZD50 including parcelpost shipping.

I used it to make a DIY NAS, but I recently side-graded to a second hand Seagate NAS.