Hey mate no worries.
The aussie suppliers are:
Oset: KD Moto
http://www.kdmototrials.com.au/bikes_details.php?PID=83Mechatechno: The Hell Team
http://www.thehellteam.com/catalogue/c6/c216Prices are on the website. The larger bikes for 10-14 y/o kids are about $1700-$1900 the smaller ones for 3-10 y/o kids are $1200-$1600.
I've dealt with The Hell Team plenty of times for my full size comp bike and they're extremely good to deal with. I believe they're in Sydney.
There's people putting their 2-3 y/o kids on these bikes. Check out this 3.5 y/o with his dad. The things are so quiet you can take them down the local park. Yes, they're not a trail bike or motorcross bike - they're not supposed to be, they're a trials bike. Kids who learn on these bikes to ride trials style can then ride anything down the track. Why do you think
Steffan Merriman was the World Enduro Champion 4 times and Aussie Trials champion several times in the 90's? He started as a kid riding these trials bikes. A long time ago when i was 10-14 years old i attended a few 'trials training' camps run by Steffan and apart from being a super nice guy he's a bloody good rider on any bike.
cheers