Hi Bob, not long ago an old friend of mine moved to indo. Recently he sent a batch of them to another old friend from Cal. His name is Mike, you know, Mike from SoCal(classifieds). He posted pics of them hatching and pics of a whole box of babies. I did talk to him and he brought them in legally, he said.
Another thing, Prasinus have not been legal to import for around or over 15 years. At least since I have kept monitors. But they were commonly imported under another name.
There are several things to consider. One is, Indo is not here. They do not live by or understand the laws we make. To them, the land is full of monitors, like in their yards. There is no reason to not sell them, as more just come in(as in pests)
Also, I talked to someone over there and he said they collect them in destroyed land. second generation growth, he said they are impossible to find naturally(undesturbed).
But that is all word of mouth.
My advice to you is, if you want them, buy them. If your concerned about all the rest, then do not. I would have to imagine, if they were illegal, they would have been busted right off. As I know fish and wildlife know exactly whats going on. Remember, the deed was done the second they are taken from nature, what happens after that is simply secondary. They will never be returned. So make some good use of them.
Years ago, my friend was talking to a fish and wildlife fella, and that fella told him to congratulate me on my recent hatching of lacies. That was within 1/2 hour of me posting it on here. hmmmmmmmmmmmm. Cheers FR