If you keep an eye out you will come across them. They are generally around the $1500 mark for adults and $800 each for feeding juveniles. There are lots of them written in as A.stimsoni and A.childreni too. Unfortunately they have small clutches, from 1-5 eggs so aren't going to become common to quickly.
If you like I will ask for an extra one should any of my people find someone who is breeding them. Do you have a preference for male or female at this stage? And how much are you willing to pay?
Although uncommon, there have been 13 that i've seen up for grabs this year. All have been $1500 each whether juvenile or adult! It is beleived one group of breeders is stocking up! All have dissapeared insantly!