Respuesta :
Based on the given complaint above, the one that should be added to the excerpt to help the reader address the concern is that, it should be mentioned whether the unit or the game was checked or inspected before it was bought. Also, they should review the terms and conditions for units that are on sale to make it clear between the buyer and the seller. Hope this answer helps.
The writer needs to explain what the missing parts look like so they can send them.