Shipping using Interparcel

Does anyone in the Hikashop community use interparcel for shipping and if so how you might connect it with Hikashop. I am finding their rates are pretty good in Australia - only slightly more than Sendle, but unlike Sendle you can send much larger items.

I have also used interparcel to ship from the UK so in terms of markets, there is interparcel australia, interparcel UK and interparcel NZ.