You don't have to be widely known, but you want to cultivate the best impression possible with anyone who contacts you about your animals. In a word, TRUST. Advertise with good properly lit photos, with the snake on a clean surface (no old sheds, no poop!!). Build a decent website, You tube videos, face book page - or just have a reasonably professionally sounding voice mail message. Good information and social skills go a LONG way. Also, healthy well bred animals have a "bloom" to them. Provide carefully kept records with each sale.