I don't know first ahdn if any of these dealers are reliable. You will have to do your own research. I just did a basic search to find out who was selling them. Here are the dealers I found,
The above link I found in a forum. I do not know if he is currently selling fire skinks, but you can check.
I hope this helps. Keep us posted on your pet endeavors. I would love to see pics when you get your lizard.