That is a shame, because I think most people (at least me) always read the feedback, especially the negative responses.
Always.
I guess just try and explain (in a nice way) that the earlier collections were made this way.
Unless he is just an azzzzzz, he will understand.
On the other hand, as a buyer, I have recieved lots of items that were damaged in packing or shipping.
You first thought, is that you got screwed by the seller, but I have watched the UPS guy just literally drop packages on my porch.
I received an Ebay shipment on some Frontline 24th Foot, from Michigan Toy, that were so mangled it was unbelievable. Some of the bayonets were actually pointing back at the soldiers. Some were joined together like a twisted pretzels.
The packing was horrible (no boxes, two to an envelope and with no foam inside separating them) and before documenting by photo, I straightened them all out with no paint chips and no breakage, luckily.
I sent an email to Michigan Toy and they offered to take them back, which I declined and then offered me a 20% on my next purchase. A great company to do business with.
On a purchase a few months later, I mentioned it to the salesman on the phone and he admitted packing the order himself. He apologized and said he did a bad job. I was impressed with his honesty.
In you case, you're at the mercy of the buyer. He can ruin your creditability with Ebay and hurt your sales. You can't control everything in the mail.
I owned a restaurant in Galveston for 27 years, and believe me, the public is hard to work with.
I could make a pot of gumbo, one guy would say it's the best he has ever had, one guy would say it was good and the next guy would say it was terrible.
The public is a tough crowd.
I always let the customer take the initiative and would respond accordingly to his tone.
If he was polite to me, I gave back more than he wanted.
If he was rude to me, I threw him out the door.
I hope you get treated fairly.
Blocking him from future transactions is a good idea.
You don't need that kind of business or the aggravation that goes with it.
Good luck,
Michael