Wildcrafting medicinal herbs

I am in Australia, so laws are different. I do sell medicinal plants in pots but I need some more income especially in winter (it's spring here). Wildcrafting herbs is fun - but what are the nuts and bolts?
Either I sell them myself at the stalls I rund already but then I would need to dry and process them in a professional way. And what type of insurance would I need? I did not find a thing about laws and regulations so far.
Or I sell it to a wholeseller, but then I would get only a fraction and I would have to drive all the way to the wholeseller. Who is likely to buy herbs? In the beginning I though of blackbery leaves, St. John's wort and nettle.

Angelika, great question.
I went googling and found this forum from 10 years ago, but I think the information is still relavent. http://forums.gardenweb.com/discussions/2012906/selling-herbs-worth-it
Some of the information covered aspects such as, for them anyway, like needing a grocer permit, displaying fresh vs. dry, whether it was profitable.
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If you are good at wildcrafting herbs and edible plants, I have a better idea for you, with less regulatory red tape and more profit. Hold small wildcrafting parties, where you teach locals how to find and use herbs for medicinal and cooking. I say cooking, because evidently Australia has awesome herbs to spicy up your food. You could do videos of your trips to extend your reach, sell to organic and sustainable types continent wide.
You might market videos and guides through sites similar to this one, they do a nice interview of you and your information, you give them a healthy piece of the pie.
In the beginning you could charge less to get your act polished, then when you're doing it in your sleep, video record it. The video needs to inform, make sure sound quality is good.
Hope this helps.
Mike

Australia may have different laws than other countries.
If you want to do it in the winter, it can be done inside. Or a greenhouse. Provide heat and some light. I try to simulate the natural conditions they live in. I grow tropical things in the middle of the U.S. : )
If you gather up a lot during regular season, you can dry them out with a dehydrator..or a bigger room for them to hang. Sure makes a room smell lovely!
I would be interested myself in what you have available. ; )
Send me a purple moosage...
Best wishes!

I forgot to say that some of the natural herb stores ( local also ) love to have them. I know ours does. Good for buying locally and no shipping costs.