We never had locker fees, in high or jr. high school.
the schools either need money to pay for something useless or the kids destroy the lockers and the fee is to offset the replacement cost. In high school when we returned our books at the end of the year, they would inspect them and charge people for excessive use. Some kids got dinged quite a bit, but I never did. Some kids thought it was funny to throw their books down the hallway:Funny until they had to pay for it, then it was hilarious.