What does eBay means 1 quantity?

If you look at a product listing on eBay and see the sentence " 1 quantity" or " Quantity:1" that means that the seller has only one of that item. Or, if you saw a product listing that said " Quantity:10" that would mean that the seller had ten of that item. And if it says

"Quantity: 10+" it means the seller has ten or more of that item.