BARNSTABLE ??? The departure of Town Manager John Klimm at the end of the year will cost the town at least $450,000, a much greater sum than the $230,000 buyout figure previously quoted.Based on the salary owed to Klimm up to 2013, including vacation time and benefits, he would receive a total of $347,330, according to an analysis by the town???s director of finance, Mark Milne.