I collect meteorites ... favourite is from the Henley Crater site in NT, south of Alice - and it's a favourite because I HAVE visited that site, so actually owning a small piece made it special for me, if that makes any sense.
In many cases prospecting your own meteorites from existing sites is not legal, in much the same way that any "significant" fossils are also not legal to keep. In both cases they can be considered to be of such intrinsic scientific value that it has been declared illegal to keep them, unlike "common" stuff that you
may (conditions apply*) be able to legally find and keep, such as gold, diamonds, etc :-)
In fact I purchased my Henley samples (for myself and my 2 brothers, with whom I visited the site) from a legitimate, registered, authorised meteorite dealer - yes, such people exist, there is even a worldwide association to regulate them!
Try an ebay search for meteorites but remember some people sell things that simply may or may not be actual meteorites, with no guarantees and no way to know.
Try this link - I have dealt with them and they are very genuine and all items are guaranteed to be exactly as stated:
http://www.rocksonfire.com/
Steve
PS: For those who may remember I won a prize in this years Qld Astrofest raffle - the prize pool was down to books, etc, when my number came up, but I did select a very handsome (and thorough) hard cover book, all about meteorites! :-D