Sometimes its really hard. Your best bet is to find a REPUTABLE breeder. No way a breeder worth anything will screw you over for $200. Too much at stake to risk a bad transaction like that. Might be tough where you are though. Not sure how many
Morelia breeders are in South Africa. I've only hatched out Jungles, so I could show you what they look like, but even with the Jungle realm there is a TON of variance. And to top it off, ALL of them are the SAME species.
Post some pics if you have a questionable animal. We should be able to identify what a baby is. Its harder to describe how to distinguish one than it is to actually distinguish one.