You can buy on US Zwift site. Use a forwarding company like myus dot com. I bought the variable length crank for the Ride, a spare seapost so we each have our prefered saddle and the mkII game controllers. It is not hard.
If you wanted it badly enough you would already have worked this out, rather than just moaning about it.
Glad to hear how everything worked out for you utilising a third-party postage system to negate Zwift lack of availability of equipment outside selected countries.
Ohh, thanks for the (snarky) last comment /s. You have a wonderful day 
Would the virtual shifting needed from this upgrade require more bluetooth channels? Running through the Apple tv and I think I am maxed out. Would love to use the zwift ride with my Neo 2T, sadly removing the motion plates though. But with the Apple TV, would I need to pair the shifters into my phone?
You could pair the Ride and the trainer but nothing else due to the Apple TV limitation on Bluetooth connections, so if you use a HRM that would push you to use the Companion app