I have also seen fabric, some upholstery grade, at the markets, bigger ones, such as Vomero. I do some upholstery and have been keeping an eye out for fabric as well and the Vomero market had some that I would consider for upholstery. I saw a place in Aversa that has the foam and batting for upholstery if you need that. I did not have my GPS on me, but I wrote down the name of the street, Via Giovanni Boccacio, in Aversa.