"What percentage of ebay buyers are just plain stupid?"
By my experience, licking one finger and holding in the air, I'd say about 10%. If by "just plain stupid" you mean they don't read past the listing title, don't look at the photos, don't read the description, don't understand the concept of combined shipping, don't read the description, think that low-grade/worn/used items should look brand new, don't read the description, and somehow thought they were bidding on something else. Add in those who win an auction and don't pay, make an accepted offer and don't pay, and Buy It Now and don't pay, all with zero communication, and the percentage goes up. But yeah, 10% in the collectibles world feels about right. May be higher in other categories
