I think it is terrible someone would sell their rejects and not disclose that piece of information. I've purchased pellets many times here on AGN and until reading this thread thought I had very good luck with my purchases. Looking back I think I may have gotten some tins of rejects here or there just due to oddly higher number of pellets with dinged skirts. But I don't have any fact to back that up. Also most tins have gotten mixed together over time so I don't know what was from who any longer.
There is one sales thread I've seen re-listed a few times over the past month or two which did flag me to the exact topic of this thread, so I was not at all surprised when it was started to read people's experience. In this thread the person is selling pellets in bags, no tins at all shown. Something just doesn't feel right.