see here: http://areaclienti.tre.it/ac3_pages/18003_ITA_HTML.htm ... entering puglia in the search will show both coverage and local shops ("negozie"). Looks like there are quite a few. Like Debernardis said, you need proof of ID (passport) to buy a prepaid sim. I'm british but have a house and a social security number over there, and I still needed my passport. get used to it, that's Italy!