Purchased in April 2018. It was always connected to a TV. Usage frequency was quite low. The adapter was connected during use, and I periodically connected it even when not in use for extended periods to prevent deterioration. However, since it has been several years, I believe it has deteriorated to some extent. There are minor scratches on the back of the main unit from inserting and removing it from the dock, but there are no visible scratches on the glass surface, and it is generally in a clean condition. There have been no malfunctions, repairs, or battery replacements. All accessories are included. Joy-Con charging grip Famicom controller will be included. I will pack them snugly inside the box. I plan to wrap the Switch box in bubble wrap before shipping.