Which service are you after? as there arer several packages?
Additional the cost on Showtime is pretty high and requires a dedicated reciever to be rented.
You should be able to subscribe directly, as they do advertise in parts of Italy thier subscription packages etc.
Also as the signals are targeted for the Nile they do they are pretty weak in general through many areas of Europe. UK genrally requires a 1.8 as a minimum an 2.4 is a better option or even larger for some locations.
Bradleywood satellite did recently I believe advertise subscription