Not sure if this helps, but today I bought a 3 (
www.drei.at/ ) Internet ToGo package that includes a Huawei E1500 USB key and 2GB bandwidth for €55. The reason I mention it is that this package includes free roaming in Italy (plus UK, Ireland, Sweden, etc.) So if you plan to travel to Austria on the way to Italy, this may be a better deal. Also the 3 UK site has similar packages, also with free roaming within 3's global network, so it's worth doing some comparisons, even within the 3 world.