My wonderful cousin (inlaw) let me in on this little secret a few years ago. Now they have free shipping to Australia and a saving in the VAT tax of about $35 so you can get a great pair of boots that fit your foot and calf delivered to your door for less than $200.
Duo Boots are great!!
Once you get onto the site you find your perfect size (I am size 10 US/AU so a 41 UK with a 36cm calf) You pop these measurements in and a page will pop up with what is available. WONDERFUL!!! You can even get a pair designed for you if you have a particular style in mind.