The device is working, guaranteed. It comes with its cables + its original controller + original Microsoft battery, which costs 130 new.
Notes:
To be clear, the controller works fine, but sometimes it has a very light drift that doesn't affect it. It hasn't happened for about four days now. It's likely just dirt that costs about 15 riyals to clean.
The controller has a very, very minor disassembly from the bottom, as shown in the pictures, and you won't feel it at all while playing.
The highest offer is 650, and I hope to sell it soon.