I am thinking about getting a trio of ackies as my first monitor. I have kept other lizards before but not any monitors before and I have a few questions. Whats average price for them? Who sells these magnificent monitors because I have been unable to find any. Also what the difference between Yellows and reds besides size and price? Would a 4x15"x30" be good for a trio? Or would I only be able to get one( if that). Any extra tidbits of info would be nice. Thanks for the help anyone!