Do you need to buy those animals, and if so why?
I would think given your latest thread http://ball-pythons.net/forums/showt...=1#post1508946 that you might want to hold off on any new addition and concentrate on your current problems and husbandry issues.
Research, research, research be a successful owner with what you already have and than consider other animals, do not buy animals just because you might get a good deal (which is not really anyway)
Not picking on you making sure you are getting a good start and a successful experience as a keeper.