Seems functional. This printer was not manufactured with a screen built-in, so to control it you will need to connect to your computer via software like Repetier Host. All the axis move and it can extrude filament.
If you have a Raspberry Pi you can set up Octoprint for wifi printing, meaning you don't have to have a computer connected to the printer throughout printing.
The SD card reader doesn't have any wires, or an obvious connection point on the mainboard.
The print surface is glass with a textured sticker on one side, the sticker has a tear in the center. The glass looks fine.
For bed levelling the printer has screws under each corner that are each secured with set screws. It seemed relatively level when I moved manually to each corner of the print surface.
Also selling 3D printer parts (rails, motors, fans etc.)