Ross, you can get thiourea from vanbar in melbourne of all things..
Any case, I live in Oz, and I got 200g of CD-2 powder from Art Craft on the way from the U.S. for $12 shipping.
I can get chems from Silverprint.co.uk, I get bromide from there, if you know someone in the U.K postage becomes cheap, chemicals will come through even if customs opens them.
You can buy, own, and use pretty much any chemical you want here in Australia without much legal trouble, the only real problem is finding a way to get your hands on said chemical.
As for:
Diethyl Ether - should be able to get it orded in at a chemist.
Collodion, USP
Glacial Acetic Acid - vanbar has it, but i dont think they'll post it.
Ethanol 95% (190 Proof Alcohol) - why not just use metho? cheap denatured alcohol.
Formaldehyde 37% - on ebay.
Copper Chloride - you could make this.
Lavender Oil - seen this somewhere here.
Silver Nitrate - seen it on ebay, along with nitric acid, sulphuric acid, sulphur, and potassium nitrate, and concentrated hydrogen peroxide.
Ammonium Dichromate
Potassium Dichromate - vanbar has it, as they do permanganate
Ferric Chloride Crystals - -think- vanbar has it
Potassium Hydroxide - Vanbar has it, cheap/
Sodium Hydroxide - Supermarket has it 99.9% as does Vanbar
Certain chemicals are much cheaper to pay for extra shipping from the U.S. or have someone send it from Silverprint to you than getting them from vanbar, such as metol and phenidone. Works out a lot cheaper and you get a lot more.