i got mine only recently, bout 3 months.
yes they have panters, jackson and etc. But you need to tell them in advance or just wait for the chams to arrive. Its not an everyday thing though. U can email them and ask.
I use to see a lot of jacksons for sale near KL, chow kit street where they sell a lot of birds. Most of the chams come from thaland. Dont se much these days though. But the pet store i mention above is very reputable.