I was lucky enough to score one on ebay.com for $75US free shipping,
I didn’t bother getting the starter kit as The power adapter is US standard ( wemo switches are compatible and quite cheap at the moment. The presence sensor can be replaced by your mobile phone and the window/motion detectors can easily be replaced with an AU standard device.
Also, I’m sure that all the swann one devices are compatible with the ST hub and reading too much lately the xiaomi sensors are working, and they are dirt cheap. I purchased 9 different sensors for around $100 AUD…
I say if you can just get the hub and extend from there.
As for power to the hub, i just got a US to AU adapter and its working fine.
I might add, jump on the WEMO band wagon ASAP, i picked up 15 globes for $14.40 at bunnings.
Harvey Norman have them for $16 at this moment and can be price matched.
You might hear mixed reviews about the wemo globes, I find them great and very responsive.
I have ordered xiaomi power sockets to see how they go. I found the Wemo power point to be a little buggy with ST, it was picking it up at a motion device. and for $13 for a wifi socket, only time will tell how i end up playing with these things.
As for the UK version, Aus Zwave Freq is on 921.4 and the uk is 868 I believe, so if you do get the UK version you will most likely be in the same situation…