Lol. Thats not rolling the dice imo. Theres not much of a gamble there. You've had 4 members who have experience and own fire gene animals tell you that it doesn't look like a fire. When you get the snake its not going to magically develop fire traits.
I looked at debs exotics website. She owns some albino stuff but no fires. My guess is, yes he bought that snake from her, but he bought it as a het albino. He then thought to himself "hey to my untrained eye this sorta maybe looks like a fire..." Then he tried to sell it as a fire het albino.
EDIT: i realize you said you already made up your mind, so ill drop it. I'm just trying to say that when you get the snake and it doesn't turn out to be a fire, please don't be upset.