Ohhhhhhhhhhh boy-oh-boy-oh-boy Rick, do I ever feel your pain.
This has happened many times to me, but the worst was when I had bought a complete Kirby 513 in mint condition, all the original paperwork and boxes, including the large outer box.
I sent the seller specific instructions on how to pack it, making very clear not to just send it in the Kirby box because of its age, brittleness and collectibility, that it needed to be wrapped in bubble wrap and sent in a sturdy outer box.
Well, a couple weeks later I came home from work. It was pouring-down rain. As I walked up the sidewalk I spotted a large, maroon box sitting on the edge of the porch, drenched wet. Oh, nooooooo, it can't be...
It was.
[cover children's eyes and ears ... profanity to ensue]
The DUMB STUPID F@#KING CARELESS LAZY-A$$ IDIOT had just wrapped shipping tape all around the large Kirby box and sent it like that. Of course, the box was a total loss. And it would have been a total loss even if it had not been raining, because it would have been impossible to remove the tape without ruining the box.
And it got worse. When I opened it up, I saw the beautiful, original, perfect-condition gray bag lying on top, soaking wet. When I pulled it out of the box I just about had a stroke. Because it had been lying on top of the inner maroon attachment caddy, the maroon ink on the caddy, having gotten soaking wet, had bled onto the bag and permanently stained the entire back side of it. The cloth hose was also similarly affected along a wide stretch.
I was so utterly enraged, so hopelessly dejected, that I just took the whole thing out to the trash can. Then I sat down and emailed the seller, giving her a blistering piece of my mind. I doubt she ever fully recovered from receiving the full bore of my rage. But I also bet she never made that mistake again.
I do not mince words with sellers now. I give them clear, precise, succinct packing instructions, and let them know I expect them to follow my instructions to the letter; that if they do not, they surely will receive negative feedback from me. So far, being an a-hole about it has paid off. I have not had any such tragedies since.
And I would not hesitate to follow up on my threat of negative feedback, either. And I wish other eBayers would not hesitate either. The only way other potential buyers can know of such laziness and carelessness is to see it noted in a seller's feedback history. eBay has tightened up its feedback policy so it's harder now for other ebayers to retaliate with unfair negative feedback, and they have also gotten more proactive about removing a negative when it is issued against someone in retaliation.