Where do you see the prices for So-net? I only see the 3 packages, but no prices. Also, are the cards easily available (in stock) at all these locations? I remember seeing somewhere that nano sims were hard to find at some retail location, for some provider.
I used b-mobile on a trip back in 2014 in my iPhone 5S at the time. The sim card was delivered to my hotel prior to my arrival. I had no issues at all with them. Was a breeze to setup.