Bought a brand new 2060 Super Ventus OC from Ninja.buy(seems to be a reputable seller), just received the item. Totally a used one.
Box unsealed. The S/N on the graphic card is different from the one on the box. A few scratches on the graphic card and the slot.
Dang that's horrible. That store, based on their ebay listing, does allow returns which is what you may have received (ie. a return item).
Haven't dealt with them, but I'd say you need to take it up with them and ebay at the same time.