After much research I have ended up with two companies that will post to Tasmania and that have one or two of the varieties that I like. I will be ordering from both of them when their season begins in a week or two. The biggest problem I had, though, was that the cost of the postage was going to be more that the value of the irises themselves. One company, Iris Splendor, is only around an hour away from me so I could always pick up my order but in the end I decided to just buy more plants and get them sent so I don't feel bad that the postage outweighs the purchase price. The other company, Sunshine Iris, has free postage for orders over $50 so I made sure to buy enough to get the free postage. There was an added glitch to this as I am eligible for a 5% discount on my first order so I had to buy an extra plant to ensure I was over the $50 mark to get the free postage. So in the end instead of buying the 5 unfrilly heritage irises I was wanting I have ended up with an order list of 13 assorted types and colours including one or two of the frilliest, frothiest flowers I have ever seen.