Selectmen are analyzing a potential increase in the annual cost for restaurant full liquor licenses, after discovering their cost was lower than in almost two dozen surrounding communities. According to a comparison done by the town, Hingham’s licenses cost $2,000, while many others run from $2,500 to $5,000. Selectmen have subsequently sent out letters to all 26 full liquor license holders in the town to get a response on a potential increase. “We wanted to see what the reaction was before we voted on anything,” said Selectman Bruce Rabuffo. If partially raised, an increase could provide an additional $40,000 to the town, a small amount that could still be significant, Rabuffo said. “To me, it’s not a big deal, but it is three-fourths of a policeman or a teacher, so that’s always [something to consider],” he said.