I don't know the advertiser of this snake but I can see no wrong doing on his part. He gives the age, weight, he discloses a feeding problem, he bought it from a reputable breeder with paperwork calling it a black back and his asking price is not out of line. I see no embellishment. A person could always make him an offer for less than he is asking if they feel that he is asking too much. I have seen ads (not on this site) of people claiming a new morph and asking thousands of dollars for what appears to me to be an unusual normal and if the traits can be passed on to offspring or not is unknown. That is not above board to me but I can see no resemblance to this situation.