Milan, January 2 - Three southern Italian regions kicked off a wave of nationwide post-holiday sales on Wednesday. Stores in Basilicata, Campania and Sicily unfurled discount signs in windows today and will be followed by the rest of Italy beginning on Saturday. Retailer and consumer associations are bracing themselves for disappointing results, however, given the pinched pockets of hard economic conditions in Italy. The Italian consumer association ADUSBEF predicts a 19% decline in spending during the post-holiday sales compared to last year. The Italian business association Confcommercio predicts each family will spend an average of 359 euros on discounted goods this year.