I'm a cynic, I know, but the I'm sorry sounds like a prepared cut and paste for when it goes bad. He had other Apple giftcards in large amounts laying around that he could use to appease the author??? This is a well worn machine.
"He wanted to give my my cards back but I tried for years to get rid of them so I say he can sell them and give me the BTC. Which he did and our deal was finally forfilled."