Who can point me to a supplier of comfrey leaves to Western Australia?

I'm based in Perth, Western Australia, and am looking for a source for commercial quantities of fresh and/or dry comfrey leaves to brew my own compost tea. The only suppliers I have found so far were all based in NSW and are not allowed to ship to Western Australia due to our stringent quarantine laws.

I am in country WA. Recently I bought comfrey seeds from The Seed Collection in Victoria, so why not grow your own. Also available from Eden Seeds in QLD.