I've never dealt with them and I don't see any reviews but the website doesn't look dodgy. I would buy with confidence. They even have some Super8, for extortionate prices of course.
Apparently you can pay with paypal, which is a plus. You can also select shipping to a different part of the world (sweden included) and more importantly you can buy without the need to register to their website.

You should click on

AGGIUNGI AL CARRELLO (add to the basket)

then select ACQUISTA SENZA REGISTRARTI (purchase without registering) and click CONTINUA

Fill in the form:

Nome - Name
Cognome - surname
codice fiscale - Social Security Number (don't know why is mandatory but it is, I doubt they would know if you put a fake one in case you don't want to give it, considering that it's made for italians)
Telefono - telephone

Indirizzo 1 - address 1
Citta - city
CAP - postcode
Nazione - country (sweden in your case)
Provincia - here you select the swidish town your locality falls under

Let me know if you need more help

Shipping to Italy is 10.90 so it's a regular Poste Italiane packet, insurance is extra. However I have no idea how much would be the postage to Sweden. I read on their website that it should be requested in advance the shipping quote for foreign countries. I just sent them an email asking a quote for Sweden.