Right now we offer only standard GLS. Express is very expensive and not much faster in europe. We are looking for a cheaper method for our customers.
Maybe you could integrate a service to your webshop, which would offer few different shipping options?
When I sell my hardware here at the forum marketplace, I pretty much always use this website called
www.shipit.fiYou can go and see their website as an example. They offer few different options for both domestic (here in Finland) and international shipments.
Shipit.fi can be integrated with few different webshop platforms like Magento 2, WooCommerce, PrestaShop, Procart.
So if something like this service is available in Austria, it would be a great asset to you.

Indeed that is missing. A micro usb cable and a 5V atleast 1.5A power adapter would work. Canaan ships the controllers without power supply. Most people have those things at home, but we will put a reminder in the product description now.
For the Set you will need:
1) PC power cable
2) Micro usb cable and a 5V 2A adapter. (1.5A may be not enough)
Raspberry Pi Foundation recommends a 5VDC 2.5A adapter for the Raspberry Pi 3, which is inside the Canaan metal case.
https://www.raspberrypi.org/help/faqs/#powerReqs