....you probably already have, but as been mentioned here, I would see if you can't buy the crate or box from the manufacturer themselves. I had the same situation with a pair of Avalon's and they sold me a brand new crate, it was not cheap but once I got the crate, I was then able to sell the speakers. But, now at a much larger ''loss'', but they sold. As also mentioned, the buyer may eventually have the same problem and I'm sure will come up in the overall price negotiations.
I don't I would drive
I don't I would drive