I think you have more chance of growing a horn on your head than finding a marble motoro. I have only ever seen hystrix for sale once, and that was years ago.
I am from WA. I have one female who I have just divided from the rest of my group that looks like she will drop her pups in the not too distant future (plenty of movement now). All the pups from this batch are spoken for. I can let you know when I have pups for sale in the future though, but your looking at a few month wait.
Also, try plecoplanet. There was recently some pure Leo's on there, if you can stomach 10k a pop!