I wonder if people on ebay do not use bad photos to hide flaws (I really don't wonder, but am being charitable). Recently I ordered a Fujinon 35mm f2.8 lens. Pictures were kind of dark, but I thought I wanted that particular lens, so I took a risk. The box came, and I opened it with anticipation, and ended up with the same brand, but it was a f3.5 28mm (with a dinged filter ring)! Bait and switch?
I said, no, and we arranged to swap for the correct lens. I asked for his price for the 28mm, but it was too high so I sent it back. Before I knew it, I see a refund in my Paypal account and got a note with a picture where he confesses that he did not properly vet the correct lens, and showed an image with a flashlight shining through the lens revealing a lot of haze! I think he realized I was not an easy play. With the refund I ordered my second choice lens (within my specific budget), which even as I waited for the first, was starting to wonder if it might be the actual better choice (Mamya Sekor-SX 35mm f2.8, M42).