Yeah, theres a few good examples, but well I'd say these stay the minority and usually these 5% or 10% are usually just "watch noobs", i think there are really really really few people who are "watch nerds" like us and would make the effort to take pictures, prepare the ebay description and so on but REALLY lack the 2 minutes to put batteries in it.
For selling modules this is even much more obvious, after all you need to think "What is the usually kind of person that has LED watch modules and sells these on ebay?" We can only come to few cases:
- A helpless housewive that only found out these are LED watch modules her deceased husband left her as he was an LED watch module salesman in the 70s. Now she wanna get rid of all the crap as her new husband is moving in (30 years later). (Hmmm, a rare case)
- A Jeweler who realized that after 30 years the customers dont demand many LED watch module replacements any more. As the now blind watchmaker cant see if these well kept modules work anymore he puts up an ebay auction on his braille keyboard. His pictures seem a bit blurry (also not really a likely case)
- An LED watch collector frequently buying and selling on ebay. Like most collectors that buy big lots of watches he has dozens of "beyond repair modules" left over. Out of greedyness he suddenly decides to write "untested" in his auction to add this mystery lottery bonus. For added realism he even pretends he's a noob regarding watches. (Quite likely case at ebay)
My conclusion: Untested modules may appear often on ebay, but i doubt many of these really just "weren't tested". Especially (!!!) if they read "Pulsar", as Pulsar collectors are generally fanatics that dream about contact cleaning at the nights, in their hands an untested watch and a fresh battery will show a mystical magnetism. Only massive force with heavy arms can be used to seperate a Pulsar fanatic with his battery from an untested Pulsemeter.

(just kidding - Pulsar or not, we're all like that)