I never mentioned anything regarding recovery. The account I sold to him I don't believe to be recovered regardless, I think it's currently disabled because he made a large purchase of gold causing a manual Jagex Moderator review of the account. I would also say even in the event that was a concern of his, he should of really asked before sale about warranty options.
However, I do understand where you're coming from on the second point but again, I have to say if it really meant that much to him I don't know why he accepted no answer before proceeding with payment.
Moving on though, I will try and keep this into consideration in future sales and bring these things to my customers attention before payment is made.