Nice, but just under 20% of them were defective

Good product I got on a deal that work great for what I need. However there was close to a 20% defect rate in my batch. I ordered 50 and so far have found 5 that have no zipper and 4 that have a zipper but it is not attached to one side of the bag. One bag had 1/8 of a zipper on one side of the bag.