This guy is delusional. He had these listed on eBay for $3500, but lowered it to $3K. I messaged him and asked what he would take for them.
Here was his reply:
"I have two cb 750 sandcast engines here at my location. I only have the case halves on ebay at the moment cb750e-1006126, I also have a complete sandcast engine cb750e-1002896 Its pretty rough I attached pictures of the damage. I am open to offers on both, saying that I do know what I have and will not accept any lowball offers. I can get rid of these for $10,000 but the guy is in Japan, personally I would like to keep these machines in the United States."
$10K, Really? And he still owns them because he doesn't want to send them out of the country. Really. $10k, Really?