Well, if you are serious about curbing the root cause of the problem, 20 year sentences might do the trick. For too long it was simply a wrap over the fingers for exotics' smuggling and it is a far larger operation than drug smuggling.
We actually do have a reasonable range of exotic species in SA in for the time being its better than nothing. I think there are some real knowledgable creatures on this forum that understands the concept of managing genetically healthy, captive bred spiders and this could keep our market alive for quite some time.
(as long as i can get my Metallica,Balfouri and Subfusca)