I would never reply to an ad that said "pay me before I travel." They're either willing to travel or not, that just screams scam. They can't even tell if its a cinny or a black pastel, or the gender. Did you bother to find out where they acquired it from, how long they've had it, etc? I hope you asked for more pictures of the animal at least. Ask them to take a picture of it on a piece of paper with the date written on it. See if they run.