I just don't get all the negative posts. It looks a fair deal me. The seller is telling you exactly what you are buying and has stated "there's a 30-day return policy in case you don't like what you get"
Why the negative comments below? Nobody is forcing you to buy! What's the BIG problem?
Quantity over quality is Samsung's motto. There's your 300m shipped phones lol
I would never trust ex display units especially those that is amoled they probably were turned on 24/7 on the highest brightness and are high risk or already have burn in.
Samsung ditching old units before the new model is released. A common practice