yeah, we have a review board here in oz too, its just that where i live, they seem to be just as slack as anyone else.
so i may as well get it now before they start cracking down. there are a lot of custom plates where i am, i've already got one on my other car. should get a pic got you's all.
as for costs, when i got my other one, about 6 years ago, it was one off fee of $50AUD, but its more like a rental than anything else, cos the MVR (motor vehicle registry) still owns them. i think its just the right to display or something like that, but now its $140AUD, and you can keep em as long as you got a car and rego on it.
i've also seen stoopid cops confiscate plates cos they thought they were fake, pretty stoopid if you ask me.