To be safe we are calling this item "used" but it is essentially new. It is a floor demo that has 5 minutes of use time on it. Most of them look/feel new however a few of them have minor scrathes! We are offering a 1 year warranty. You ONLY one single serve cup with lid, nothing else. Parts # are 321KKU770 323KKU770 Works on: Ninja BL780 Ninja BL780CO BL660 BL663 Ninja BL770 Ninja BL600 Ninja BL810 Ninja BL820 Ninja BL830 Or any Ninja Pro Tab 4 Blender It might work on other Ninja sets, please message me to see if it will work on your system. Why spend +$150.00 on a new Ninja when you can buy just the single serve cup! NOT A KNOCK OFF. THESE ARE GENUINE AUTHENTIC! On Feb-25-15 at 09:19:55 PST, seller added the following information: Sellers: Delight buyers. Get your own map of past buyers.