Too bad it would cost an arm and a leg to ship it to you. I have driftwood coming out my ears at the moment.
The park by me just ends up bull-dozing it into a pile and burning it. I was waiting for a park ranger to say something to me about picking it up. My excuse would be I was picking up litter.
Some bits of advice if you are collecting it yourself instead of buying it. If you have a freshwater tank don't collect any from an ocean beach. Plus down there in Oz watch out for the tons of poisonous critters if you are. Only thing I had to worry about was Lake Erie Water Snakes, they bite but are not poisonous.