Petco/smart doesn't sell the ghost morph unless you paid ghost morph price (which to Petco standards would probably be about $400). Normals vary widely.
Can you describe your set up in full detail please, not eating is a common response to stress. Could be from the move, or could be from improper husbandry (most likely anything the store employee told you, is wrong).
I'm thinking that this is the case as well. what color are the eyes? you might have a snake going into shed and not a ghost.