I did hear about a picking mistake in one of the big retailers where instead of customers being shipped one puncture repair kit they were shipped the bulk box which (lets for sake of comedy) contained 100 puncture repair kits.
Maybe it was only 10. But anyhow.
This went on for some considerable time apparently.
I remember this happening in other mail order things too. I knew someone who got 8 mugs instead of 1.
And someone once shipped me 24 tiny plastic storage boxes to PX when I worked there (the first time).