@Coolblue_NL I have two huge and heavy 27 inch screens boxes. I didn't order this, the ones advertised said were coming with all items and I assumed those were tested. I ordered online for a reason, what makes you think I can take these boxes to a pick up point or to your shop?
After wondering on what you based the prices of the second hand products if you don't know if they work. I also wonder, why is it your customer responsible for returning the "garbage" you sent to their houses?