Heres a couple things to consider. If your looking at kingsnake classifieds then look at the ad first by is it by a buisness or a person, if its by a buisness the buisness is verified through ks. Now that doesnt make it a failsafe but it does show there is some recourse because that buisness has to be verified through the county the buisness is operating out of. Another thing to look at is if you pay through paypal you have more recourse cause you can always dispute and get your money back if you keep a good email record. Again its not a perfect failsafe but it does give you some recourse. As far as prices go, for example if pieds normally sell for 850 it doesnt mean they are selling so if you see someone selling em for 650 it doesnt mean a scam, it simply may mean they are aggresive to sell. Also the person selling may need to come up with quick cash to fund another animal that they are desperate to get and dont want to loose. There isnt as much scamming going on now as there used to be. I personally would buy from ks versus a free ad site like fauna any day. Also keep in mind if you do a search on the fauna boi it doesnt always tell the entire truth. Or not everyone is gonna do a good guy thread but they sure as heck will do a bad guy thread way before the deal is even completed so ya got to take that with a grain of salt. Heres an example of my point, i sold a breeder male pied male for 700 bucks on ks and i got so many emails accusing me of asking way to low on the price so they didnt trust it. I sold the animal, shipped the animal and they guy was so happy on the deal. He never did a good guy thread or did any feedback. The reason i sold him so low was cause i wanted to sell him fast so i could raise up what i needed for an adult calico female and i didnt want the calico to get away. Theres nothing wrong with asking for refrences as well if you have doubt dealing with someone online. Anyone would be more then willing to give refrences to close a deal.