How many of you guys are charging a sur-charge? We went with the price if gas is 2.50 to 3.00 we charge 5% of the monthly bill. Over 3.oo per gallon we are charging 10% monthly bill. 10% is the most example 4 cuts @ 30.00= 120.00 plus 12.00 sur-charge for a total of 132.00. Most customers are ok with it.