These items need to be off-loaded. They are prototypes, some are one-of-a-kind experimental items; no longer being used for one reason or another. They are not bad items, just things that are taking up space. So instead of tossing them out maybe you can give them a new home.
All items are "as-is". These items are in various stages of completion. Some are fully assembled while others are not. Get them now or before long they will be forever gone.