Another thing that maybe helpful is if you think someone might be using a photo of an animal that isnt theirs or in their possesion ask them to take a pic of the animal on todays(or very recent) newspaper with the date clearly visible. Of course I wouldnt ask this of a larger well known breeder but if you never heard of someone and are feeling skeptical this is a good way to test the legitimacy of the animal in question. I have seen this done with other items as well not just reptiles.

If someone says they dont have access to a newspaper or wont comply I would definately be concerned.