The Irish drinks and snacks group Cantrell & Cochrane (C&C) today announced the price range for its public offering on the Dublin and London stock exchanges at €2.60 to €3.60 euros per share.   The price range values the company, which handles brands such as Bulmers cider and Ballygowan water, at €1.1m at its mid point - at the lower end of analysts' forecasts of 1.15-1.4 billion euros.