And we inspect every single lens, accessory etc. to ensure that everything is working. It might be messy in our little shop, but after all we are not a flea market :-)
Sometimes we also test by putting a roll of film into a camera and then develop and scan it, like this very nice Contax T3 Titanium Black. For this we also wanted to test the new SantaColor ISO100 film, so this is indeed a double test ;-)