Couriers can pick up for you Dazz (or one of our many happy Sydney members perhaps?)
I believe I have seen the inserts on Ebay for around $30. I also think I saw some dark inserts somewhere too.
I was tempted but still haven't fitted the tyres I got off ebay ages ago, and I'm too cheap to ditch them (and too lazy to throw them on Ebay!). Hopefully I can baby the tyres to the 60k service, and then throw the others on. So I guess give it a year or so, and I'll be seriously looking for new wheels (and only have a year and a half to enjoy them before the lease is up!)