Don't just approximate....Get a rate from the 
post office or usps.com and ask the buyer for 
about $1 more than that because it may end up 
being more.... I approximated on an auction which 
was going to England based on my past experience 
shipping to England, and it ended up being $3.00 
more than my approximation! AGH! If it's too much 
trouble for you, it's not really rude to simply 
tell the buyer you can't ship to Italy.... >< Of 
course, that might make you lose money so it's 
probably best not to do that. ^.^