CB jacksonii species/subspecies can be difficult to find.
Babies can be extremely unstable and difficult to raise.
Some say that any jacksonii species/subspecies are not "safe" as CB's until 5 months old.
It will be much more difficult to find meru's now that CITES has banned all exportation of three horned species.
Good luck finding Meru's, but atleast your chances of finding CB might be higher if some one considered the open market for them now.