You mean he hadn't checked if he qualifies? Given that he's lived in the US for most of his life and is probably a dual citizen, he should have checked the requirements the very first day he entertained the thoughts of running for president.
Either this guy is not qualified to be president [can't even counter check obvious stuff] or he was just pulling a publicity stunt. I don't know which is worse!
Never count on making a good sale. Have the purchase price be so attractive that even a mediocre sale gives good returns.